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【单选题】
( )是旅游最古老、最常见、最基本的类型,也是我国旅游活动的主体形式。A.
休闲度假旅游
B.
观光旅游
C.
文化旅游
D.
商务旅游
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反馈参考答案：
举一反三
【简答题】The clever boy took the clock apart and then ______ it in a short time． 这个聪明的小男孩把闹钟拆了，一会儿就又装好了。
【简答题】你在做 Southern 印迹分析,并且刚完成了凝胶电泳这一步。根据方案,下面一步骤是用 NaOH 溶液浸泡凝胶,使 DNA 变性为单链。为了节省时间,你略过了这一步,直接将 DNA 从凝胶转至硝酸纤维素膜上。然后用标记探针杂交,最后发现放射自显影片是空白。错在哪里 ?
【单选题】The clever boy made a hole in the wall, ________ he could see what was going on inside the building.
A.
on which
B.
at which
C.
through which
D.
in which
【单选题】The clever boy made a hole in the wall, ______he could see______was going on inside house.
A.
which; what
B.
through which; what
C.
through that; what
D.
what; that
【单选题】The clever boy made a hole in the wall, _____ he could see _____ was going on inside the house. [ ]
A.
which; what
B.
through which; what
C.
through that; what
D.
what; that
【单选题】The clever boy worked out the problem _____ at last. [ ]
A.
success
B.
succeed
C.
successful
D.
successfully
【单选题】The clever boy made a hole in the wall, _______ he could see _____ was going on inside house. The clever boy made a hole in the wall, _______ he could see _____ was going on inside house. A. which; wh...
A.
which; what
B.
through which; what
C.
through that; what
D.
what; that
相关题目：
【简答题】The clever boy took the clock apart and then ______ it in a short time． 这个聪明的小男孩把闹钟拆了，一会儿就又装好了。
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