英文 it is necessary that the result of an experiment______a.be checked and recheckedb.would be checkedc.should check and recheckd.is checked and rechecked
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![英文 it is necessary that the result of an experiment______a.be checked and recheckedb.would be checkedc.should check and recheckd.is checked and rechecked](/uploads/image/z/6338316-12-6.jpg?t=%E8%8B%B1%E6%96%87+it+is+necessary+that+the+result+of+an+experiment______a.be+checked+and+recheckedb.would+be+checkedc.should+check+and+recheckd.is+checked+and+rechecked)
英文 it is necessary that the result of an experiment______a.be checked and recheckedb.would be checkedc.should check and recheckd.is checked and rechecked
英文 it is necessary that the result of an experiment______
a.be checked and rechecked
b.would be checked
c.should check and recheck
d.is checked and rechecked
英文 it is necessary that the result of an experiment______a.be checked and recheckedb.would be checkedc.should check and recheckd.is checked and rechecked
it is necessary that the result of an experiment______
选A
这是一句虚拟语气
结构是it is +necessary +that +(should)+ do...
因为实验的结果是被检查的,所以用被动
完整的句子是it is necessary that the result of an experiment should be checked and rechecked
有不会的可以再问我
选A
a.be checked and rechecked