马上就要模拟考试了，为了取得优异成绩，走进考场答题时，你会选择 [ ] ①一再告

单词拼写。

1. A friend in need is a friend                  (确实).

2. I went to the American embassy to                 (寻找)help.

3. Your theory is                  (难以执行的).

4. Smoking is                  (有害的)to your health.

5. They multiplied and                  (存在)on the earth for more than 140 million years.

6. Several                  (加拿大人)visited our school last week.

7. my                  (重量)will be less than on the earth.

8. Two pieces of                  (行李)are in the car.

9. The boy lied that a hen was lying under the tree                  (产卵)eggs.

10. I cheered up immediately and                  (漂浮) weightlessly around in our spaceship.

男性，36岁，因关节肿痛2个月，高热、寒战、乏力3天入院。关节摄片见密度增高，提示坏死性骨髓炎。检验：HGB115g／L，WBC0．9×10⁹／L，分类未报，血小板正常。骨髓提示增生性骨髓象，粒细胞中可见中毒颗粒

该患者最可能发病机制是（）

A.粒细胞生成障碍

B.粒细胞成熟障碍

C.粒细胞破坏过多

D.粒细胞消耗过多

E.粒细胞分布异常

Provide your doctor with a detailed medical history ______ he can give you the accurate treatment . [      ]

A. even if    

B. in case    

C. so that  

D. as though

采暖系统是由发热设备、送热设备和（）设备三个部分组成的。

A、放热

B、吸热

C、电气

D、压力