Listen to the following news report about how social media could be beneficial in scores choose the best answer to each questionQuestions 1 to 3 are based on the news report you’ve heard[音频][音频]
A. Parents are deciding what happens in the classroom.
B. Teachers are not doing their jobs correctly.
C. Teachers are missing the chance to get involved with social media.
D. Communities are not supporting their students.
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[音频]
A. Magical moments to ruin.
B. Magical moments to capturing in photos.
C. Annoying school children
D. Overworked teachers
[音频]
A. The ability to link social media account with smart phones.
B. The ability to get onto a computer.
C. The ability to link computers together.
D. The ability to find a free wireless Internet.
元谋人生活距今大约有（）
A. 200万年
B. 190万年
C. 180万年
D. 170万年
细菌细胞进人稳定期是由于: ①细胞已为快速生长做好了准备; ②代谢产生的毒性物质发生了积累;③能源已耗尽;④细胞已衰老且衰老细胞停止分裂;⑤在重新开始生长前需要合成新的蛋白质:
A. ①④
B. ②③
C. ②④
D. ①⑤
E. ④⑤
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