心血管系统是人体发育成熟最迟完成的系统,()阶段的学生心肌纤维弹性较好,是心血管系统发展很重要的阶段。
A.小学
B.中小学
C.中学
D.大学
参考答案:D
单词拼写(共10小题,每小题0.5分,共5分)
小题1:The little box c______ the little boy’ s toys.
小题2:Her brother is e________ in a fast food restaurant , earning $40, a week.
小题3:Please be quiet.The weather report is being b________. Let’s listen.
小题4:One way for people to keep fit is to f______ healthy eating habits.
小题5:Your waiter should a_______ to us for his rudeness.
小题6:She is so fat that she has made up his mind to go on a d_____.
小题7:A c_____ came in and bought some food.
小题8:He wrote the poem in m_______ of Lu Xun.
小题9:The teacher doesn’t p______ sleeping in class.
小题10:He is not poor; on the c_____ he is a millionaire.
()是汽车在一定的使用条件下,汽车以最高效率工作的能力。