He always tries his best to complete it on time.______
A. However the task is.
B. However hard the task is.
C. Though hard the task is.
D. Though hard is the task.
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The findings of James and other scientists in their work______.
A. remain a theory to be further proved
B. have been challenged by many other experts
C. are practiced by the researchers themselves
D. have been generally accepted
患者，男性，26岁，查体见牙关紧闭，面肌痉挛，呈苦笑状，该患者可能是
A. 肠伤寒
B. 甲状腺功能亢进
C. 疟疾
D. 破伤风
E. 脑炎
He kept his head at that critical moment; otherwise the accident______.
A. would happen
B. happened
C. would have been happened
D. would have happened
已知：int a,b；下列switch语句中，( )是正确的。
A. switdh(a)
B. switch(a+b)
C. case a:a++；break； case 1:a+b；break；
D. case b:b++；break； case 2:a-b；
E. switch(a*a)
F. switch(a/10+b)
G. case 1,2:++a； cases 5:a/5；break；
H. case3,4:++b； default:a+b；
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