皮皮学，免费搜题
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【单选题】
蛋白质和核酸的相似之处是 ( )。
A.
都是多聚物
B.
都含有糖
C.
都含有4种不同的单体
D.
都具有作用
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举一反三
【单选题】With our country entering an aging society, ______ the retirement age is probably unavoidable.
A.
having delayed
B.
delaying
C.
being delayed
D.
to be delayed
查看完整题目与答案
【多选题】关于接线盒明装和暗装,说法正确的是
A.
接线盒镶嵌在墙里的是暗装
B.
接线盒外挂在墙面的是明装
C.
新建楼房接线盒一般是暗装
D.
新建楼房接线盒一般是明装
查看完整题目与答案
【单选题】关于装斗说法错误的是（）
A.
装斗应掌握先入者先出的原则
B.
生姜等鲜药应尽量保持原貌，不需要洁净处理
C.
不常用饮片可以装一斗供应多日调配
D.
饮片外观近似的饮片装斗时更要注意核准名签
E.
装斗人员要与仓库保管员紧密配合，由装斗人员将饮片日消耗量、短缺品种等信息，及时提供给仓库保管员
查看完整题目与答案
【单选题】____several times，but unfortunately，the boy still couldn’t smooth away the problem on his own.
A.
Having been explained
B.
The problem having been explained
C.
The problem had been explained
D.
Although the problem had been explained
查看完整题目与答案
【单选题】下面关于室内管道安装工程的一般施工顺序，不正确的是( )。
A.
先装地下，后装地上
B.
先装大管道，后装小管道
C.
先装支架、吊架，后装管道
D.
先装地上，后装地下
查看完整题目与答案
【单选题】(Having eaten) the cherry pie, I (struck) several pits and (nearly) (broke) a tooth.
A.
Having eaten
B.
struck
C.
nearly
D.
broke
查看完整题目与答案
【单选题】A few days after the interview, I received a letter _____ me admission to the university. [     ]
A.
having offered
B.
offered
C.
to be offered
D.
offering
查看完整题目与答案
【单选题】At last she left her house and got to the airport, only ______the plane flying away.
A.
having seen
B.
to have seen
C.
to see
D.
saw
查看完整题目与答案
【单选题】. _______from the operation, the patient was advised to stay in hospital for another two weeks.
A.
Having not fully recovered
B.
Being not fully recovered
C.
Not having fully recovered
D.
Not fully recovering
查看完整题目与答案
【单选题】Academic publishers try to yield higher profits by the following means EXCEPT______.
A.
having students buy new editions
B.
publishing a textbook series
C.
discouraging the use of used textbooks
D.
bullying small new publishers of textbooks
查看完整题目与答案
相关题目：
【单选题】With our country entering an aging society, ______ the retirement age is probably unavoidable.
A.
having delayed
B.
delaying
C.
being delayed
D.
to be delayed
查看完整题目与答案
【多选题】关于接线盒明装和暗装,说法正确的是
A.
接线盒镶嵌在墙里的是暗装
B.
接线盒外挂在墙面的是明装
C.
新建楼房接线盒一般是暗装
D.
新建楼房接线盒一般是明装
查看完整题目与答案
【单选题】关于装斗说法错误的是（）
A.
装斗应掌握先入者先出的原则
B.
生姜等鲜药应尽量保持原貌，不需要洁净处理
C.
不常用饮片可以装一斗供应多日调配
D.
饮片外观近似的饮片装斗时更要注意核准名签
E.
装斗人员要与仓库保管员紧密配合，由装斗人员将饮片日消耗量、短缺品种等信息，及时提供给仓库保管员
查看完整题目与答案
【单选题】____several times，but unfortunately，the boy still couldn’t smooth away the problem on his own.
A.
Having been explained
B.
The problem having been explained
C.
The problem had been explained
D.
Although the problem had been explained
查看完整题目与答案
【单选题】下面关于室内管道安装工程的一般施工顺序，不正确的是( )。
A.
先装地下，后装地上
B.
先装大管道，后装小管道
C.
先装支架、吊架，后装管道
D.
先装地上，后装地下
查看完整题目与答案
【单选题】(Having eaten) the cherry pie, I (struck) several pits and (nearly) (broke) a tooth.
A.
Having eaten
B.
struck
C.
nearly
D.
broke
查看完整题目与答案
【单选题】A few days after the interview, I received a letter _____ me admission to the university. [     ]
A.
having offered
B.
offered
C.
to be offered
D.
offering
查看完整题目与答案
【单选题】At last she left her house and got to the airport, only ______the plane flying away.
A.
having seen
B.
to have seen
C.
to see
D.
saw
查看完整题目与答案
【单选题】. _______from the operation, the patient was advised to stay in hospital for another two weeks.
A.
Having not fully recovered
B.
Being not fully recovered
C.
Not having fully recovered
D.
Not fully recovering
查看完整题目与答案
【单选题】Academic publishers try to yield higher profits by the following means EXCEPT______.
A.
having students buy new editions
B.
publishing a textbook series
C.
discouraging the use of used textbooks
D.
bullying small new publishers of textbooks
查看完整题目与答案