[题目]如图所示为“绿叶中色素的提取和分离实验的部分材料和用具.下列叙述错误的是 ( )A．图中①加入研钵内的物质有无水乙醇.SiO2和CaCO3B．将研磨液倒入图中②的漏斗内.漏斗底部应放一块单层——青夏教育精英家教网——

【题目】如图所示为“绿叶中色素的提取和分离”实验的部分材料和用具。下列叙述错误的是（）

A．图中①加入研钵内的物质有无水乙醇、SiO2和CaCO3

B．将研磨液倒入图中②的漏斗内，漏斗底部应放一块单层尼龙布

C．图中③画滤液细线的要求是细、齐、直

D．图中④随层析液在滤纸条上扩散速度最快的色素为黄绿色

【题目】 Do you believe scientists will ___________ a cure for cancer in the near future?

A. come up B. come up with

C. come about D. bring about

【题目】My English teacher’s humor was________ make every student burst into laughter.

A. so as to B. such as to

C. such that D. so that

【题目】—How often do you eat out?

—________，but usually once a week.

A．Have no idea B．It depends

C．As usual D．Generally speaking

【题目】 —Maggie had a wonderful time at the party.

—________, and so did I.

A. So she had B. So had she

C. So she did D. So did she

【题目】 I can’t concentrate ________ my lessons unless I’m free ________ noise.

A. on; with B. at; from C. with; of D. on; of

【题目】

She writes very well that English isn't her first language.

A. seeing

B. supposing

C. judging

D. providing

【题目】 Personally, I think modern education is __________sitting at a desk and looking at the blackboard.

A. more than B. no more than

C. less than D. no less than

【题目】如图是某低等海洋动物完成某反射的反射弧模式图。下列叙述不正确的是

A．a处接受适宜的电刺激，b处能测到电位变化

B．兴奋每传递一次都会导致突触前膜的面积增大

C．图中有三个神经元，a处兴奋传导的速率大于c处

D．若将神经纤维置于高Na＋环境中，静息电位将变大

【题目】So long as you get on line, you'll have to be faced with news on _______ aspects.

A. all sorts of

B. a great deal of

C. a large amount of

D. the number of

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