新生儿期进行呆小病的筛查哪项测定最合适()
A.脐血测定T4
B.促甲状腺素测定
C.脐血测定T4
D.生母血清T4测定
E.血清胆固醇测定
参考答案:B
There is ________ in his words.We should have a try. (2011·四川,3)
A.something
B.anything
C.nothing
D.everything
在生产中,天然气一般以()形式存在。
A.单纯的天然气气井
B.沼泽井
C.柴油井
D.煤油气井
E.原油伴生气