Which of the following is TRUE about Cyanovifin？
A. It is an active ingredient in a foam, cream or suppository.
B. It is an active ingredient applied before sex to prevent HIV transmission.
C. It is a protein that protects the body from infection by microorganisms.
D. It is a drug used to prevent HIV transmission.
查看答案
If students have a schedule conflict on the day of the exam, they should
A. take a make-up exam later on.
B. make every effort to come to class.
C. spend two extra hours in class later on.
D. do extra work at home.
What does the woman agree to do？
A. Help the man plan a student rally.
B. Use the student parking lot.
C. Make a donation to support the group.
D. Sign a petition.
Which of the following is NOT in the six Arab countries conducting a public opinion poll？
A. Saudi Arabia.
B. Egypt.
C. Syria.
D. Jordan.
正确答案是（）
A. warm
B. constant
C. stable
D. cold
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