People who are following norms behave________ in most situations.
A. appropriate
B. appropriately
C. inappropriate
D. acceptable
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The committee _______of ten members.
A. include
B. consist
C. comprise
D. compose
People often choose to________ to another country for economic and political reasons.
A. immigrate
B. immigrant
C. immigration
D. emigrate
植物秸杆中最易被微生物分解的大分子
A. 木质素
B. 半纤维素
C. 几丁质
D. 淀粉
联合固氮微生物:
A. 固氮菌属
B. 根瘤菌属
C. 固氮螺菌属
D. 巴氏梭菌属