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【判断题】
扁豆属于长日植物,白菜属于短日植物 ( )A.
正确
B.
错误
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反馈参考答案：
举一反三
【单选题】Knowing that the cruel criminal has done a lot of unlawful things, I feel sure that I have no ______ but to report him to the local police.
A.
time
B.
chance
C.
authority
D.
alternative
【简答题】I don’t feel like ______ (watch TV) tonight because I have a lot of homework.
【单选题】吗啡的构效关系叙述正确的是
A.
酚羟基醚化活性增加
B.
氮原子上引入不同取代基使激动作用增强
C.
双键被还原活性和成瘾性均降低
D.
叔胺是镇痛活性的关键基团
E.
羟基被烃化，活性及成瘾性均降低
【单选题】I had a lot of training in cross-cultural relations I feel prepared to work abroad.
A.
and
B.
but
C.
because
D.
so
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