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【单选题】
1999年由Jeffrey Model 基金会和美国红十字会联合提出常见原发性免疫缺陷疾病预警不包括:
①
1年内发生4次以上新发耳部感染;或1年内2次以上严重鼻窦感染
【单选题】
消除视差的方法是( )使十字丝和目标影像清晰。
【单选题】
消除视差的方法是( )使十字丝和目标影像清晰。
【单选题】
消除视差的方法是()使十字丝平面和目标影像重合。
【单选题】
How difficult it is ______ the modern world without oil.
【单选题】
The exchange of goodwill mission greatly ______ a better understanding between the two countries.
【单选题】
I like this jacket better than that one, but it costs twice ______.
【单选题】
Young drivers under 25 have the highest number of accidents while those over 50 have ______.
【单选题】
The novelist is a highly ______ person whose works appeal to many readers.
【单选题】
The reason why he didn’t take the exam was _____ he had an accident on his way to the school.
【单选题】
Our Chinese tradition is quite different _____ we only want to defend our own country, not to invade other countries.
【单选题】
Since you have already come, you _____ stay here for a couple of days.
【单选题】
I found the book you recommended in the library, ______ is missing.
①
the front cover of which
②
the front cover of that
【单选题】
Malaysian Airlines lost an airplane on March 8 last year, _____ whereabouts still remains a mystery.