问题
单项选择题
在我国，引起肺源性心脏病的最常见病因是（）
A.肺间质纤维化
B.慢性阻塞性肺疾病
C.重症肺结核
D.支气管扩张
E.原发性肺动脉高压症
答案
参考答案：B
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在我国，引起肺源性心脏病的最常见病因是（）
A.肺间质纤维化
B.慢性阻塞性肺疾病
C.重症肺结核
D.支气管扩张
E.原发性肺动脉高压症
参考答案：B
| 完形填空。 | |||
| My favourite pet is a cat. It was a gift from one of my friends. She is nearly two ___1___ old and weighs about two kilograms（重两公斤）. She likes to eat fish ___2___ and usually eats her ___3___ from a tin. Do you know what it likes to ___4___ most? Milk. But the milk shouldn’t be too cold. Like other cats, she likes to chase and play ___5___ balls. After school, I usually spend some time ___6___ with her. Sometimes I brush her ___7___, and she seems very comfortable when I do this. Unlike me, my brother’s favourite ___8___ is a fantail goldfish. His fantail goldfish doesn’t need a bed, and he doesn’t have to ___9___ her much. She doesn’t bark or miaow. She only blows ___10___. | |||
| ( )1. A. weeks ( )2. A. well ( )3. A. food ( )4. A. drinks ( )5. A. with ( )6. A. enjoying ( )7. A. eyes ( )8. A. toy ( )9. A. give ( )10. A. cries | B. months B. good B. fur(皮毛) B. drink B. of B. playing B. mouth B. plant B. ask B. laughs | C. days C. best C. tail C. eating C. in C. studying C. wings C. pet C. feed C. bubbles | D. years D. nice D. rubbish D. having D. of D. caring D. fur D. bird D. buy D. s miles |