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【简答题】
19世纪自然科学的三大发现是细胞学说、和能量转化和守 恒定律。
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反馈参考答案：
举一反三
【简答题】请根据视频中的内容填空。(可以复听;填空时勿用缩写,比如,听到don't,该写do not,不然电脑容易误判 ) Three tips: 1 Establish open lines of communication with your roommate. If something is bugging you, ______ to let him or her know.
【单选题】What is a possible consequence if the mother does not respond to her child's signals?
A.
The child will make little effort to speak.
B.
The child will speak properly all the same.
C.
The child will stop giving out signals
D.
The child will develop a language of its own.
【单选题】A possible reason that a child having an unhappy relation with his/her mother will not be affected by maternal separation at 6 to 9 months is that ______.
A.
the struggle between trusting and mistrusting has reached a climax
B.
the child sees himself/herself as being separate from the environment
C.
the child's sense of trust is destroyed
D.
no sense of trust has ever developed
【简答题】Listen to an audio clip for two or three times, in which Michelle Wilson for About.com talks about how to get along with your roommate. Then fill in the blanks according to what you have heard. Gettin...
【简答题】U3ViewingListening_s0_mp4.mp4 Viewing & Listening Three tips: 1. Establish open lines of communication with your roommate. If something is bugging you, 1 to let him or her know. Be upfront and ...
【多选题】工作环境被血液、体液污染时,清理后,用()mg/l含氯消毒液进行擦拭消毒。
A.
5000mg/l含氯消毒液
B.
2000mg/l含氯消毒液
C.
1000mg/l含氯消毒液
D.
500mg/l含氯消毒液
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