病句门诊。 1．我是多么想念童年住在北京城南的那些景色和事物啊！ _________

短文改错（共10小题，每小题1分，满分10分）

My friend Jack who was always working hardly so that he could earn enough to buy a car of his own. He used to say, “My life will be better when I get a nicer car.” It took him more than three years to make his dreams come true. However, Jack was not satisfied with what he has achieved. He worked even harder, hoping that he would able to buy a big house with a beautiful garden. One day, I told himself that happy is a journey, not a destination. Try to do what you like and enjoy what you can enjoy at the present, and you will feel regretful when you are too old to do anything.

脑内海绵状血管瘤的最佳影像学检查方法是（）

A.头颅平片

B.CT

C.MRI

D.血管造影

E.脑池造影

关于乙肝感染的窗口期描述正确的是（）

A.抗HBe阴性

B.抗HBs阳性

C.抗HBc阴性

D.HBsAg阴性

E.HBeAg阳性

平形托辊一般为一长托辊，主要用于下托辊，起（）作用。

A.支撑空载段皮带；

B.拉紧；

C.连接架构；

D.增强机械强度。

跨商品图利交易是利用两种不同商品或金融资产对同一因素变化的价格反应差异从中谋利的交易方法。