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【单选题】
下列哪种氨基酸为嘌呤和嘧啶核苷酸生物合成的共同原料?A.
谷氨酸
B.
甘氨酸
C.
天冬氨酸
D.
丙氨酸
E.
天冬酰胺
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举一反三
【单选题】It was a meeting _____importance I didn't realize at the time.
A.
who
B.
whose
C.
which
D.
that
【单选题】The Curies received another honor in 1944 with the discovery of the 96th element on the Periodic Table of the Elements, which was named curium. (Para. 13)
A.
In 1944 when the 96th element on the Periodic Table of the Elements was found it was named curium in honor of the Curies.
B.
In 1944 the Curies were again honored with the discovery of curium, the 96th element on the Periodic Table of the Elements.
【简答题】为了保障人身安全,避免发生触电事故,将电气设备在正常情况下不带电的金属部分与大地作电气连接,称为 。 它主要应用在中性点不接地的电力系统中。它的原理是利用并联电路中小电阻强分流的作用。
【单选题】It was a meeting _________importance I did not realize at that time.
A.
that
B.
which
C.
its
D.
whose
【单选题】The Curies received another honor in 1944 with the discovery of the 96th element on the Periodic Table of the Elements, which was named curium.
A.
In 1944 when the 96th element on the Periodic Table of the Elements was found it was named curium in honor of the Curies.
B.
In 1944 the Curies were again honored with the discovery of curium, the 96th element on the Periodic Table of the Elements.
【简答题】Prior to the 20th century, women in novels were____________(屈从天种种束缚) imposed by the male-dominated culture.
【单选题】It was a meeting ______ importance I didn’t realize at that time.
A.
which
B.
of which
C.
that
D.
whose
【单选题】It was a meeting ______ importance I did not realize at the time.
A.
that
B.
which
C.
its
D.
whose
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【单选题】It was a meeting _____importance I didn't realize at the time.
A.
who
B.
whose
C.
which
D.
that
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