下图所示为连续分裂细胞的一个细胞周期所用时间，下列说法正确的

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问题选择题

①甲→乙的过程表示分裂间期 ②乙→甲的过程表示分裂期 ③一个细胞周期是指甲→甲的全过程 ④一个细胞周期是指乙→乙的全过程

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A．①②③

B．①②④

C．③

D．④

答案

答案：D

填空题

After its (1) to the (2) in 2001, China has taken steps towards opening up its (3) . As a condition for joining the WTO, China (4) itself to a (5) of trade liberalization, including the reduction of tariffs on cars and agricultural products. These tariffs reductions are both (6) and there is (7) for China to (8) at a faster pace.
A (9) of (10) and a more rapid and profound reduction of import tariffs would (11) of those Chinese consumers who would (12) imported products at lower prices. Second, a higher (13) into China would take away much upward pressure on the Renminbi and provide a true and lasting (14) to solving current global (15) . Indeed, even a modest (16) in the opening-up process would go a long way towards solving the problem.
The opening up of China’s markets to international competition should (17) deep reforms. Banks should be recapitalized, bad loans provisioned fully and state-owned companies’ runaway indebtedness (18) . Only when real progress in these areas is made should China begin to consider a reform to its (19) . Doing it any earlier would be highly (20) .

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单项选择题 A1/A2型题

颅脑CT扫描中的特殊扫描方法是（）

A.听神经瘤增强扫描

B.蛛网膜下腔扫描

C.脑灌注CT

D.脑池扫描

E.脑动脉造影

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