适用于松砂、粉土、杂填土及湿陷性黄土的路基处理方法是（）。 A.换土垫层 B.排水固

病历摘要：某男，65岁，因右眼视力渐进性下降三年，不见物二个月，不伴有红痛症状，家族无传染病及遗传病史，全身无特殊不适。

根据病人目前情况，你认为采用何种治疗措施较妥？（）提示：病人白内障术后眼底检查见上方视网膜脱离，并见马蹄形裂孔

A.玻璃体切割加硅油注入术

B.玻璃体切割加视网膜光凝术

C.视网膜激光光凝

D.眼内注气术

E.裂孔处巩膜冷凝、视网膜下放液加巩膜外加压术

F.玻璃体切割加激光光凝

G.玻璃体切割术

H.口服中草药

急性白血病导致出血的原因有()

A．血小板减少

B．血小板功能异常

C．凝血因子减少

D．消化性溃疡

E．白血病细胞的浸润

根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。

     If you have mice in your house, you are not alone. ____1____ Having mice doesn't mean your house

is dirty. It is one of the challenges of every house owner.

     When we are trying to catch a mouse, the first that comes to our mind is a mouse trap(夹子).

___2_  __ Mice travel along walls for safety. Don’t touch the trap too much because you will leave your

smell on it.

     ___  3  ___ Usually, mice will not visit your house when they hear there is a cat inside. It will also help you fight against the mice.

     Be careful when using poison(毒药) to kill the mice. ____4____ It's dangerous because the mice may

touch your food and pollute it.

     Mice can get into the houses through tiny holes. The best way to have a mouse-free house is to close

any possible entry(入口).

     ___  5       _If there is nothing there for them to eat, they won't possibly stay.

A. Keep a cat as a pet in your house.

B. Cheese is the favorite food of mice.

C. Every house may have mice for some reason.

D. Leave the poison out of your children's reach.

E. Don't leave even a small piece of food outside.

F. It will kill them, but you may not be able to find the dead mice.

G. Put a small piece of cheese under the trap, and put it near the wall.

有关中央脊髓损伤综合征的特点，以下不正确的是（）。

A.损伤多由颈椎过屈性损伤造成

B.颈椎损伤时引起的根动脉及脊前动脉受阻，可加重该损伤

C.上下肢瘫痪严重程度不一，上肢重于下肢，或一侧上肢瘫痪，或双下肢瘫痪

D.手部功能障碍多明显，手内在肌萎缩

E.损伤平面以下可有触觉及深感觉障碍

当事人既约定违约金又约定定金的，一方违约时，对方( )。

A．只能适用二者中数额较少的

B．只能适用二者中数额较多的

C．可以选择适用二者之一

D．只能适用违约金