在Windows98状态下切换到MS-DOS方式的正确方法是 A．按Ctrl+Alt

However, when ______teams to complete tasks at school, we are often hardly aware of this.

A．forming

B．to form

C．formed

D．be forming

According to the dealer, the painting ________ to go for at least one million dollars. [ ]

A. is expected  

B. expects

C. expected  

D. is expecting

原发性肝癌最主要的播散途径是（）

A.肝内门静脉系统

B.直接转移

C.淋巴系统

D.血液系统

E.种植转移

属于记忆技巧法是（）

A.首词记忆法

B.兼容

C.分解一联合法

D.提示法

E.背诵法

简述装置开车时的安全防范措施。