The birdwatchers decided to begin to study the changes ______their numbers ___ a snowy morning.

   A. in; on      B. in; in      C. to; on      D. to; by

Which symbol means “degree”?

　 A. @　 　　　B.∵　　　　 C. °C D. %

－How is the old man?

－He has _______poor eyesight, but he has _______good memory.

A. /; /　　　　 B. a; a　　　 C. /; a　　　 D. a; /

 My father didn’t drive me to school as usual because his car _______because of the cold weather.

   A. was broken down       B. broke down      C. broken      D. has broken

 Mr. Su was driving in the snowstorm _________his car crashed into a tree.

   A. when      B. as         C. while             D. as soon as

Which sentence structure does the following belong to?

Sandy calls her parrot Chatty.

　 A. S+V　　　 B. S+V+P　　 C. S+V+IO+DO　　 D. S+V+DO+OC

 －Did you ________the traffic accident in Wenzhou?

－Yes, I did.

A. heard of                 B. hear about

C. hear from                D. heard about

More and more animals are in danger and there will be _______space for them if we do nothing to protect them.

　 A. less and less　　　　　　　 B. larger and larger　

C. more and more D. fewer and fewer

 It’s _______of you _______in the reading room.

    A. polite; talking quietly             B. impolite; talking quietly

    C. impolite; to talk noisily            D. polite; to talk loudly

 _______their short stay in Zhalong Nature Reserve, the tourists could watch the birds ______.

    A. While; closely   B. When; close   C. During; closely   D. At; close