1. [单选题]下面关于杉科的特征描述中，正确的是( )。
A. 落叶乔木
B. 孢子叶球单性异株
C. 珠鳞与苞鳞为半合生
D. 种子常上端具翅
2. [多选题]Directions: Beneath each of the following sentences there are four choices markedA,B, C and D. Choose the one answer that best completes the sentence.
A. Example:
B. The wild flowers looked like a soft orange blanket the desert.
C. covering B． covered C． cover D． to cover
E. 21. Listen! Do you hear someone for help?
F. calling
G. call
H. to call
I. called
3. [单选题].What can we infer from the last sentence of the text?
A. Happiness comes from peaceful life in the country.
B. Health is more important than money.
C. The harmony between man and nature is important.
D. Good old days will never be forgotten.
4. [单选题]杨柳科植物的花序是柔荑花序。( )
A. 正确
B. 错误
5. [单选题]What is special about the battery?
A. It is built in an iPhone.
B. It is the smallest of its kind.
C. It can also be used as a charger.
D. It keeps power for about 30 days.
6. [单选题]
A. alone
B. next door
C. at home
D. abroad
7. [单选题]After the teacher’s words，all the students in the class _________.
A. 1ooked very serious
B. thought they would be rich
C. began to think about their designs
D. began to play games
8. [单选题]关于热力学定律，下列说法正确的是
A. 在一定条件下物体的温度可以降到0 K
B. 物体从单一热源吸收的热量可全部用于做功
C. 吸收了热量的物体，其内能一定增加
D. 压缩气体总能使气体的温度升高
9. [单选题]
A. point
B. reason
C. result
D. right
10. [单选题]47_____Athey
A. one
B. this
C. some
