沼泽形成的原因分为湖泊发展晚期沼泽化、（）两类。

阅读理解。

     Kate's grandpa was very rich and had some shops. The old man began to learn drawing when he was

sixty, and he loved it very much. For twelve years he drew a lot and there were many pictures in his

workroom. He was satisfied with them and kept them well.

     One day the old man was ill. He had to be in hospital. Before he died, he said to Kate,"I want to give

my pictures to a school as presents. Then the students will remember me forever. But I don't know which

school I'm going to give to. Can you help me?"

     "Well," said the little girl."You'd better give them to a blind school."

1. Kate's grandpa was _____.

A. an owner of shops

B. a teacher

C. a farmer

D. a driver

2. The old man tried his best to be_____.

A. an artist

B. a doctor

C. a teacher

D. a shop assistant

3. The old man loved _____ very much.

A. reading

B. writing

C. swimming

D. drawing

4. When the old man died, he was _____.

A. sixty

B. seventy

C. seventy-two

D. seventy-three

5. Kate thought her grandpa's pictures were _____.

A. good

B. bad

C. beautiful

D. nice

为使口服药物迅速达到有效血浆浓度，缩短到达稳态血药浓度时间，并维持体内药量在D～2D，应采用的给药方案是（）

A.首剂量给2D，维持量为2D/药物消除半衰期（t_1/2）

B.首剂量给2D，维持量为D/2t_1/2

C.首剂量给3D，维持量为2D/t_1/2

D.首剂量给3D，维持量为D/2t_1/2

E.首剂量给2D，维持量为D/t_1/2

垃圾填埋场泥质防水技术的核心是( )施工技术。

A．严格控制碾压压实度

B．掺加膨润土的拌合土层

C．严格控制含水量

D．控制检验频率和质量标准

以下哪项为瓜藤缠局部外治的主要原则（）

A.忌搔抓水烫

B.清热、凉血、散结

C.燥湿、收涩、止痒

D.提毒、软坚

E.下肢抬高位

憎水性硅酸绝热保温涂料由海泡石绒、膨胀珍珠岩以及（）等各种优质绝热材料及高分子聚合物复合而成。

A.硅酸盐纤维、无机非金属

B.硅酸铝纤维、有机硅

C.硅酸复合物、发泡陶瓷

D.聚氨酯泡沫