Speaker A: What’s the rate for sending a package of books surface mail to Japan
Speaker B: ().

A. Do you have any friends in Japan

B. 85 cents per pound, but the limit is 11 pounds per package if you want it to go book rate.

C. I’m afraid it will take about days for these books to reach Japan.

D. The rate for surface mail is cheaper than that for airmail, but surface mail takes longer.

下列关于动脉粥样硬化的生物化学改变叙述错误的是（）

A.粥样硬化斑块中堆积大量胆固醇

B.粥样硬化斑块中的胆固醇来自血浆脂蛋白

C.血液中的过氧化脂质能防止动脉粥样硬化的形成

D.LPL对于动脉粥样硬化形成具有双重作用

E.LDL能抗动脉粥样硬化