Multiple choice questions (full score 100, 20 questions in total, 5 points for each question)
1. What World Day is September 16 stipulated by the United Nations? (d) World Meteorological Day
A, World Water Saving Day B, World Environment Day C, World Meteorological Day D, Ozone Layer International Day
2. Mercury, cadmium, chromium, lead and arsenic are a kind of pollutants, which do great harm to human body and are called "five poisons". These pollutants are absorbed by plankton after entering the water body with wastewater. Small fish eat plankton, big fish eat small fish, and people eat polluted fish, and pollutants will gradually gather in the human body. Why do we call this relationship? (B) food chain pollution
A, water pollution B, food chain pollution C, fishery pollution D, marine pollution
3. Which of the following are the main new energy sources (A, nuclear energy, solar energy and geothermal energy)?
A. Nuclear energy, solar energy, geothermal energy B, oil sands, oil shale, synthetic petroleum C, natural gas, coalbed methane and biogas.
4. How many cigarette toxins can kill a cow? (One piece, 20 pieces)
a，20 B，50 C，80 D， 100。
5. What kind of activities are the main causes of global warming in the last hundred years (C, human activities)?
A, volcanic activity b, solar activity c, human activities
6. The faucet drips water, 15 minutes, 200 ml, with nearly 20 liters of water every day. How many tons of water are wasted a year? (4,7 tons)
1 ton a, 2 tons b, 4 tons c, 7 tons d
7. A battery of 1 can make a square meter of land lose its use value forever. Waste batteries are hazardous wastes, and the recycling method is (C, special recycling).
A, and can't use the garbage together; B, put it together with reusable garbage; C, special recycling.
8. What does "white pollution" mainly mean? (b) Disposable plastic products
A, waste paper b, disposable plastic products c, waste batteries
9, we often say that noise pollution refers to (b, more than 80dB).
1. Above 90dB, above 80dB and above 40dB.
10, the main purpose of choosing phosphorus-free washing powder is (b) to prevent pollution.
A, protect clothes b, prevent pollution c, protect hands.
1 1. What is the proportion of polluted rivers in China at present? (D、90%)
a、50% B、60% C、70% D、90%
12, ozone is a sky blue, smelly gas, the ozone layer can absorb and filter out a lot of harmful components (A, ultraviolet rays) in the sun.
A, ultraviolet b, infrared c, visible light
13, (c, methane) is not only a greenhouse gas 23 times more powerful than carbon dioxide, but also a "time bomb" that causes global warming.
A, nitrous oxide b, hydrofluorocarbon c, methane
14. In Cape Helena, South America, which is closest to the South Pole, almost all animals are blind: if a sheep is blind due to cataract, the hunter can pick up a blind rabbit and go home to enjoy delicious food. Wild birds flying in the sky can't tell the direction, even the fish in the river are blind. Many people who live here suffer from skin cancer and cataracts. Why is this? (c) The ozone layer in this area has been seriously damaged, which is caused by the strong ultraviolet rays of the sun.
The climate there is too cold.
That area receives sunlight for a short time.
C, the ozone layer over this area has been seriously damaged, which is caused by the strong ultraviolet rays of the sun.
15. What are the ways of drug residues in fish, meat and eggs? (1) Feeding livestock, poultry and fish with contaminated feed, and using antibiotics and other drugs to prevent and treat diseases)
A. Feed livestock, poultry and fish with contaminated feed, and use antibiotics and other drugs to prevent and treat diseases.
B toxins released by the body itself when animals are slaughtered.
C, through genetic genes
16. Which of the following ways is more environmentally friendly? (send email)
A, send a greeting card b, buy a beautifully packaged high-end gift c, send an email.
17. What are the main reasons for the sharp decline of wild animals at present? (c) Driven by various monetary interests such as animal fur, human beings kill a large number of wild animals.
Excessive deforestation has caused animals to lose their habitat.
B, the current global warming makes wild animals unable to adapt.
C, human beings kill a large number of wild animals for the money benefits of animals' fur, skin and so on.
18, as of February, 2008, due to global warming, there are even more known islands (c, 18) on the earth, including the small island countries that have sunk into the sea and no longer exist, sinking 6 meters below the sea surface, and another 40 islands are sinking, making them uninhabitable or uninhabitable due to the submerged soil.
a， 12 b， 15 c， 18 d，26。
19, which of the following foods can effectively improve the acidic constitution of human body, which is the fastest way to curb 80% global warming at present? Vegetables and fruits)
A, fruits and vegetables b, chicken, duck and fish c, delicacies and seafood
20. If (a) the 3.5 billion mu of arable land on the earth is cultivated organically first, it can absorb nearly 40% of carbon emissions at present! This is the solution of environmental protection and sustainable development today.
A, organic agriculture b, chemical agriculture c, nomadic and semi-nomadic agriculture
Popular science question and answer for help
Reward score: 10- settlement time: 2006- 10- 1 20:23.
1 China two bombs and one satellite project refers to _ _ _ _ _ _.
[The number of times this topic has been extracted is: (425)]
A. Atomic bombs, missiles and satellites B. Atomic bombs, hydrogen bombs and satellites
C. hydrogen bombs, missiles and artificial satellites.
Answer area: a b c d
2 shenzhou spaceship runs in _ _ _ _ _ _ orbit.
[The number of times this topic was extracted was: (92 1)]
A. Geostationary B. Sun synchronization
C. near-earth D.
Answer area: a b c d
The first manned spaceship Shenzhou 5 flew in space _ _ _ _ _ _ _.
[The number of times this topic was extracted was: (1522)]
A.2 1 many hours B. 22 many hours
C. more than 24 hours d.
Answer area: a b c d
The range of a ballistic missile is.
[The number of times this topic has been extracted is: (646)]
A. Ballistic length of missile flight B. Ground geodesic distance between missile launch point and target point
C. the geodesic distance of the missile flight plus the maximum height d.
Answer area: a b c d
The combination modes of multistage rockets are divided into series, parallel and series-parallel connection. Among them, the most common.
[The number of times this topic has been extracted is: (664)]
A. Series type B. Parallel type
C. series-parallel connection D.
Answer area: a b c d
Among small satellites, what is the mass of flying satellites?
[The number of times this topic has been selected is: (650)]
A.0. 1 ~ 0.5 tons B. 10 ~ 100 kg
C. less than 100g d
Answer area: a b c d
7 What is a black barrier?
[The number of times this topic has been extracted is: (775)]
A. The return capsule is in an area with insufficient oxygen in the atmosphere. B. The return capsule rubs against dense atmospheric molecules to form a plasma sheath.
C. the return capsule is in the non-measurement and control area outside the atmosphere.
Answer area: a b c d
What is the atmosphere in the cockpit of Shenzhou manned spacecraft?
[The number of times this topic has been extracted is: (656)]
A. Low pressure pure oxygen atmosphere B. High pressure pure oxygen atmosphere
C. Low pressure mixed atmosphere of nitrogen and oxygen D. Normal sea level atmosphere
Answer area: a b c d
Shenzhou spaceship propulsion module is equipped with propulsion system, and there are four main engines to provide power for the orbital maneuver and return braking of the whole spacecraft. Two main engines are used for work and the other two engines are used for _ _ _ _.
[The number of times this topic was extracted is: (496)]
A. Backup B. Docking with the space station
C. landing buffer D.
Answer area: a b c d
10 the breakthrough time for detecting extrasolar planets is.
[The number of times this topic has been extracted is: (643)]
A.20 The 1970s
C.d. in the 1990s.
Answer area: a b c d