问题
单项选择题
基因工程、干细胞技术和纳米材料研究的共同特点是()。
A.关注宏观领域的技术
B.关注中观领域的技术
C.关注微观领域的技术
D.关注不同领域的技术
答案
参考答案:C
基因工程、干细胞技术和纳米材料研究的共同特点是()。
A.关注宏观领域的技术
B.关注中观领域的技术
C.关注微观领域的技术
D.关注不同领域的技术
参考答案:C
从方框中选择恰当的句子补全对话,使对话内容完整。 Sally: Hello ,Tommy! Tommy: Hi, Sally! Sally: Tommy, I lost (遗忘) something at home. I need them now. Tommy: __1__ Sally: I am at school. __2__. Tommy: Yes, I can. What do you need? Sally: I need my notebook, keys, pen and English-Chinese dictionary. Tommy: Your notebook? __3__ . Sally: It's in the drawer. Tomy: I know. __4__ Sally: Mmm..0h! They are on the dresser. Tommy: __5__ Sally: My pen is in the pellcil case and my dictionary is on the bookcase.
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