合作学习理论认为，在班级教学中，学生群体的组织形式有三种，即( )。

多项选择题中小学教师职业道德规范的基本内容包括( )。

多项选择题新课程提倡的学习方式是( )。

单项选择题Tom's mother always told him not to smoke again, but ______ didn't help.

单项选择题—Excuse me, where is the nearest bookshop, please —Sorry, I don't know. —______.

单项选择题The police still haven' t found her, but they' re doing all they （）

A. may
B. can
C. must
D. will

单项选择题Nobody but Jane ______ the secret.

单项选择题The issue is how to ______ of radioactive waste.

单项选择题There would be not a good harvest of wheat in North China this year（）the big snow.

A. in spite of
B. apart from
C. due to
D. in case of

单项选择题In our class, when the bell rang and the teacher closed his book, it was a ______ for everyone to stand up.

单项选择题This coastal area ______ a national wildlife reserve last year.