问题
单项选择题
心排出量是指
A．每分钟由一侧心房射出的血量
B．每分钟由一侧心室射出的血量
C．每分钟由左、右心室射出的血量之和
D．一次心搏一侧心室射出的血量
E．一次心搏两侧心室同时射出的血量
答案
参考答案：B
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心排出量是指
A．每分钟由一侧心房射出的血量
B．每分钟由一侧心室射出的血量
C．每分钟由左、右心室射出的血量之和
D．一次心搏一侧心室射出的血量
E．一次心搏两侧心室同时射出的血量
参考答案：B
选词填空，根据文章内容，选用所给单词的适当形式填空。其中有两个是多余的。
There 小题3: one hamburger, some French fries and one drink. The little old man carefully divided the hamburger in half and the French fries into two piles. Then he neatly 小题4: the half of the food in front of his wife. Both he and 小题5: wife took a sip(一小口) of the drink. “How poor the old couple was!” the people around them might think. As the old man started to eat his hamburger and his French fries, his wife sat there 小题6: him. They took turns to drink. A young man 小题7: over and offered to buy another meal for 小题8:. But they refused politely and said they got used to sharing(分享) everything. Then a young lady asked the wife. “Excuse me, Madam. Why aren’t you eating? You 小题9: that you shared everything. Then, could you 小题10: me what you are waiting for?” She answered in a smile, “The teeth.” |