下列关于基因库的描述，错误的是（） A.基因库是一个群落的全部个体所含的全部基因
题型：多项选择题
问题：
下列关于基因库的描述，错误的是（）
A.基因库是一个群落的全部个体所含的全部基因
B.生物个体总是要死亡的，但基因库却因种群个体的繁殖而代代相传
C.种群中每个个体都含有种群基因库中的全部基因
D.基因突变可改变基因库的组成
题型：多项选择题
阅读理解。
From school to band Practice, the Venturi Eclectic is an Earth-friendly way to get where you want
to go. This battery-powered, zero-emission (meaning it doesn't pollute the air) vehicle runs mainly on
renewable energy. Solar panels on the Eclectic's roof absorb sun rays when you're driving. On windy
days, you can connect a machine to the car's roof that collects energy from the wind while you're parked.
The Eclectic's top speed is 28 miles an hour; the battery lasts for 31 miles before it needs to be recharged.
Zipping (迅速行进) around the neighborhood has never been better.
Here's an eco-friendly way to tell time: Simply fill the Bedol Water-powered Clock's tank (箱) with
water, add some lemon juice, and the clock will display the time without the need for environmentally harmful
batteries. There are two sets of metal electrodes (电极) inside the water tank. Water contains ions (离子)
that carry negative and positive charges. These ions complete a charge between the electrodes, creating
enough energy to power the clock. Just refill the tank every few weeks, and this clock will keep on ticking.
Bloodhound SuperSonic Car (SSC) will be the first car to attempt to break the l,000-mile-an-hour barrier.
(The current record is 763 miles an hour.) A concept for now, the rocket-shaped car gets its original push
to 350 miles an hour from a jet engine. Then a rocket fires up, pushing the SSC past 1,000 miles an hour.
In order to keep the car streamlined (流线型的), the driver lies back at a 45-degree angle (角度).
You're having a blast at your friend's birthday party. But when it's time to bring out the cake, everyone
crowds around, blocking your view. No worries. Throw the Triops into the air, and this clever camera
captures the view from above. The Triops can take three pictures at once, each from different angles. You
can also record sounds and command the Triops to start shooting whenever it hears that noise. That's one
smart camera.
1. What is the common characteristic of the Venturi Eclectic and the Bedol Water-powered Clock?
A. They don't need batteries.
B. They are difficult to operate.
C. They can be powered by water.
D. They are environmentally friendly.
2. According to the passage, the Venturi Eclectic _____.
A. is popular with businessmen
B. is suitable for a long trip
C. can turn wind into energy
D. has only a little gas emission
3. The underlined phrase "having a blast" in the last paragraph probably means _____.
A. looking at a picture
B. enjoying yourself
C. blowing out a candle
D. recording sounds
4. Which of the following is TRUE according to the passage?
A. The Triops is sensitive to sounds.
B. The driver of the SSC must be of great size.
C. The color of the Bedol Water-powered Clock is like that of lemon.
D. The SSC doesn't have anything to do with a rocket actually.