题目内容

Fill in each of the blanks in the following sentences with a word or phrase listed below. Change the form where necessary.1. Leather shoes need __________ with good quality wax.2. Businesses can not __________ without investment.3. He has drunk one cup of coffee to _________ himself.4. The new policy __________ the development of agriculture.5. We could __________ the work for the time being.6. Don’t try to threaten me. I won’t __________ with you.7. The country __________ its independence in 1972.8. Dust and dirt soon __________ if a house is not cleaned regularly.9. The doctor’s instruction must be __________ exactly.10. English is his __________ and history is his minor.

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心尖朝向 ( )

A. 左前下方
B. 前下方
C. 左前方
D. 右前方

成人安静时的心率约为( )次/分

A. 30-40
B. 50-70
C. 60-100
D. 100-120

左心室入口有( )

A. 二尖瓣
B. 三尖瓣
C. 肺动脉瓣
D. 主动脉瓣

肺动脉内流动的是( )

A. 静脉血
B. 动脉血
C. 混合血
D. 以上都对

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