科学研究的特征是( )。

多项选择题教师主要通过做好( )工作，促进个体的社会化。

单项选择题— ______ —Yes, a bit cold, though.

单项选择题No sooner had we reached the top of the mountain ______ we all sat down to rest.

单项选择题I don't think it advisable ______.

单项选择题—Let me introduce myself. I'm Albert. —______.

单项选择题It is foolish ______ such a mistake.

单项选择题Only twenty percent of the work ______ done yesterday.

单项选择题Not only Tom but also Alice and Mary ______ busy.

单项选择题—So you missed the meeting. — ______ . I got there five minutes before it finished.

单项选择题Neither Mary nor her brother ______ good at singing.