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【单选题】
下列关于PCR过程与细胞内DNA复制的叙述不正确的是()A.
PCR过程需要人工合成两条寡核苷酸作为引物
B.
PCR过程不需要酶，但需要DNA聚合酶
C.
PCR过程DNA不解旋即可直接以DNA为模板进行复制
D.
细胞内DNA复制时，DNA边复制
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【简答题】At Harton College-an English boarding school（寄宿制学校）for boys-there are many rules.Fif-year-old Bob Sanders often breaks them. The boys can go into the town in the afternoon after class. But they mu...
【简答题】阅读理解，判断正（T）误（F）。 There are many rules in my school. We must wear school uniforms when in school. We have to get to school before seven o'clock in the morning. In class, we mustn't eat or drink. During...
【简答题】There are many rules (制度) in the old libraries. For example, no photos, no drinking and no phones. But now a lot of libraries don’t have too many rules. They paint the rooms beautiful colors so reader...
【单选题】There are many rules in our hotel. They are _____.
A.
as follow
B.
as follows
C.
as followed
D.
as following
【单选题】绝经后骨质疏松症又称高转换型,一般发生在妇女绝经后5~10年,表现为
A.
骨形成过程增高
B.
骨吸收过程增高
C.
骨形成过程降低
D.
骨形成过程正常、骨吸收过程增高
E.
骨形成和骨吸收过程增高
【简答题】There are many rules for stamp collecting so that many people like it very much.
【单选题】There are many rules in our hotel. They are .
A.
as follows
B.
as follow
C.
like follows
D.
like follow
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