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【单选题】
男，6岁。出生时正常，母乳喂养，5个月后智能渐落后，头发变黄，肤色变白，有时发生抽搐，肌张力较高，可见湿疹。假如该患儿刚出生不久，为早期诊断，应选择的检查项目是A.
尿2，4二硝基苯肼试验
B.
尿三氯化铁试验
C.
Guthrie细菌生长抑制试验
D.
血T 、T 、TSH测定
E.
染色体核型分析
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举一反三
【单选题】I'll arrive at the movie theater ________ an hour. [ ]
A.
in
B.
after
C.
since
D.
for
【单选题】A Chinese low-budget film, Lost in Thailand , has _______ profits and praise since it hit movie theaters on 12 December.
A.
produced
B.
split
C.
increased
D.
harvested
【单选题】After leaving college, Mike was employed in an international company and _____ there ever since.
A.
worked
B.
has worked
C.
had worked
D.
was working
【单选题】Since he left the university, he __________ in an accounting company.
A.
has been working
B.
had worked
C.
had been working
D.
was working
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