血CEA升高为()
A.胃泌素瘤
B.胃肠癌
C.肝癌
D.胰腺癌
E.胃肠淋巴瘤
参考答案:B
In that situation, a wage freeze, whether voluntary or imposed by the government, deals with a ________ of inflation rather than with inflation itself.[ ]
A.symbol
B.sign
C.signal
D.symptom
罗马的“国际思考”俱乐部指出学会激发我们处于休眠状态的潜力是关乎人类前途的保证