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【单选题】
下列不是嘌呤核苷酸合成的原料A.
甘氨酸
B.
天冬氨酸
C.
丙氨酸
D.
谷氨酰胺
E.
5-磷酸核糖
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反馈参考答案：
举一反三
【单选题】In my senior year in university, I ______ running a small business and earned a few thousand dollars.
A.
followed up
B.
follows up
C.
takes a crack at
D.
took a crack at
【单选题】In my senior year in university, I running a small business and earned a few thousand dollars.
A.
takes a crack at
B.
followed up
C.
follows up
D.
took a crack at
【单选题】手动清除本机DNS缓存，可使用ipconfig命令，加上参数（）。
A.
/displaydns
B.
/flushdns
C.
/registerdnsl
D.
/showclassid
【单选题】In my senior year I ____________at writing a novel, but without much success.
A.
made a difference
B.
went after
C.
in the neighborhood
D.
took a crack
【单选题】手动清除本机DNS缓存，可使用ipconfig命令，加上参数（ ）
A.
/displaydns
B.
/registerdns
C.
/showclassid
D.
/flushdns
【简答题】Some afternoon in my senior year—shortly before Graduation, the dean of the school came to me asking if I wanted to stay in the department as a teacher. I was not surprised by an offer. I happened to ...
【单选题】手动清除本机DNS缓存，可使用ipconfig命令，加上参数（ ）。
A.
/displaydns
B.
/flushdns
C.
/registerdns
D.
/showclassid
【单选题】In my senior year in university, I ______ running a small business and earned a few thousand dollars.
A.
took a crack at
B.
takes a crack at
C.
followed up
D.
follows up
【单选题】下列Ipconfig命令的参数，（）显示所有适配器的完整TCP/IP配置信息。
A.
/flushdns
B.
/flushdns
C.
/renew[adapter]
D.
/all
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