That pair of shoes he liked was ______.
A. too expensive
B. quite cheap
C. not sold
查看答案
Wang decides to take courses and pass exams.
A. True
B. Fasle
Jim has a yellow pencil.
A. True
B. False
Private companies have little interest in producing flu vaccines because of______.
A. complicated process, high cost, low profit and high risk
B. shortages of fertilized chicken eggs
C. difficulty in growing live virus
D. fast changing of flu virus
Dr. Wilson suggests that Wang should extend his stay at the university.
A. True
B. Fasle
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