能使尿中HCG增高有()
A.恶性葡萄胎
B.绒毛膜上皮癌
C.妊娠
D.睾丸畸胎瘤
E.异位妊娠
参考答案:A, B, C, D, E
句型转换。
①I have a computer.(改为一般疑问句并作肯定回答)
____ you____a computer? Yes,_____.
②Sonia has a sports collection.(改为一般疑问句并, 作否定回答)
_____Sonia ____a sports collection? No,______.
③She plays sports every day.(改为否定句)
She_____ _____ sports every day.
④My brother has a baseball.(对画线部分提问)
_____ _____ your brother____?
⑤He watches them on TV.(改为一般疑问句)
_____ he_____ them on TV?
()是广泛采用的一种,其优点可按照表面标准样件塑造,而且有好的强度和韧性。
A.木质拉形模
B.沙胶拉形模
C.塑料拉形模