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【单选题】
角膜是眼系统中最重要的成分,它的力占眼球总力的A.
1/2
B.
1/3
C.
2/3
D.
1/4
E.
2/5
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反馈参考答案：
举一反三
【单选题】In analyzing a problem we should do all the following except_____.
A.
recognize and define the problem
B.
look for information to make the problem clearer
C.
have suggestions for a possible solution
D.
find a solution by trial or mistake
【简答题】Ⅰ．如图所示是分离混合物时常用的仪器，回答下列问题： （1）写出仪器A、C、E的名称______ （2）分离以下混合物应该主要选用什么仪器？（填字母符号） 食用油和酒精：______ 汽油和水：______ Ⅱ．实验室用固体烧碱配制200mL 0.5mol?L -1 的NaOH溶液． （1）需称量______ g 烧碱，应放在______中称量、溶解． （2）完成此配制实验，除了量筒，烧杯，...
【单选题】Investment in the public sector, such as electricity, irrigation, public services and transport (excluding vehicles, ships and planes) increased by about 10%, although the emphasis moved to the transp...
A.
people saved less
B.
people were wealthy
C.
people consumed less
D.
expenditures on luxuries in creased
【单选题】We should do except ______ when practicing yoga?
A.
empty stomach
B.
warm up arms, legs and spine
C.
stretch much and quickly
D.
concentrate and breath deeply
【单选题】If we had been more careful, we ______ much better results now.
A.
would be getting
B.
would have got
C.
got
D.
had got
【多选题】12 糖皮质激素对肾上腺的毒理学机制
A.
由于长期大剂量使用糖皮质激素，反馈性抑制下丘脑-垂体-肾上腺轴，
B.
使垂体产生的ACTH长时间减少
C.
从而导致肾上腺皮质功能丧失，
D.
产生促激素源性萎缩。
【简答题】（1）如图所示是分离混合物时常用的仪器，回答下列问题： ①写出仪器C、E的名称______、______ ②分离以下混合物应该主要选用上述什么仪器？（填一个字母符号） 粗盐和泥沙：______花生油和水：______ ③若向C装置中加入碘水和足量CCl 4 ，充分振荡后静置，会观察到什么现象？______ （2）请根据所提供的试剂和仪器，按要求填空： ①气体发生装置A可用来制取氧气，若用E装置收集...
【简答题】Which of the following is true of Paragraph 2? [A] Public-sector unions are prudent in taking actions. [B] Education is required for public-sector union membership. [C] Labor Party has long been fight...
【单选题】Investment in the public sector, such as electricity, irrigation, public services and transport (excluding vehicles, ships and planes) increased by about 10%, although the emphasis moved to the transp...
A.
people saved less
B.
people were wealthy
C.
people consumed less
D.
expenditures on luxuries increased
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