According to the passage, the present tense in English is ______.
A.not used to express one's readiness to do something in the immediate future
B.used with some verbs but not with others to express future intention
C.basically the same in English as it is in Spanish
D.not the most difficult problem for foreign students
第2题
人体速发型皮肤试验的判定时间为
A.15~20min
B.2h
C.24h
D.48~72h
E.7d
第4题
人体迟发型皮肤试验的判定时间为
A、20分钟
B、48~72小时
C、2小时
D、7天
E、24小时
第8题
A.结核菌素试验要在24h内判断
B.结核菌素试验要在20min内判断
C.经48h测量皮肤硬块直径5mm为阳性
D.经24h测量皮肤硬块直径5mm为阳性
E.结核菌素试验要在48~72h内判断
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