【单选题】终点判别是判断刀具是否到达。未到终点则继续进行( )。
【单选题】My brother is really ______. He often works in his office far into the night. [ ]
【单选题】DNA复制的精确性远远高于DNA转录,这是因为()。
A.
新合成的DNA链与模板链形成双螺旋结构,而RNA链不能。
B.
DNA聚合酶具有3’->5’外切酶活性,而RNA聚合酶没有。
C.
脱氧核苷酸之间的氢键配对精确性高于脱氧核苷酸和核苷酸之间的配对。
D.
DNA聚合酶具有5’->3’外切酶活性,而RNA聚合酶没有。
【单选题】He often works in ( )evening.
【单选题】疫情期间宅在家里的老人,以下哪些防护不正确()
【单选题】Why doesn't the man like his job now?
A.
He often works overtime.
B.
He is bored with typing work all day long.
C.
His boss is angry with him.
D.
He doesn't want to be a technician.
【单选题】Windows7中,若将正在运行的应用程序窗口最小化,则该应用程序()
【单选题】文艺复兴时期的诗歌对诗歌形式进行了改造,其中不包括()。
C.
认为诗歌应该押韵,使诗歌的格式方面有了一种定型