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【单选题】
下列物质中作为合成IMP和UMP的共同原料是A.
天冬酰胺
B.
甘氨酸
C.
一碳单位
D.
CO2
E.
谷氨酸
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皮皮学刷刷变学霸
举一反三
【简答题】I could never be so ______ (成功的) without your help.
【单选题】Now most Chinese families in the country have their own houses ________ [ ]
A.
to live
B.
living
C.
living in
D.
to live in
【单选题】Mr Li always ______ weekends playing ping pang with his son. [ ]
A.
spends
B.
costs
C.
takes
【简答题】Mr Li a_____ his son to play computer s once a week.
【单选题】听力原文：(A) There are many houses at the bottom of the hill. (B) Trees have lost most of their leaves. (C) Smoke is rising from the chimney. (D) Many pipes are being installed.
A.
B.
C.
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