问题
单项选择题
松萝属于
A．体轻，质松，易折断，断面粉质，显疏松层纹
B．质松而韧，横断面可见外层为海绵状物，内层为许多小室，室内有卵
C．质硬而脆，断面平坦，外层白色，中间有亮棕色或亮黑色的丝线环4个
D．体轻，中空，易碎，表面黄棕色半透明
E．体轻，骨质坚硬，“马头，蛇尾，瓦楞身”
答案
参考答案：C
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松萝属于
A．体轻，质松，易折断，断面粉质，显疏松层纹
B．质松而韧，横断面可见外层为海绵状物，内层为许多小室，室内有卵
C．质硬而脆，断面平坦，外层白色，中间有亮棕色或亮黑色的丝线环4个
D．体轻，中空，易碎，表面黄棕色半透明
E．体轻，骨质坚硬，“马头，蛇尾，瓦楞身”
参考答案：C
Ann is a middle school student. She has a sister 1 a brother. They are Helen and Paul. Ann and Helen can 2 . Ann can sing and play 3 well, but Helen 4 . Helen doesn’t like playing the instruments（乐器）. She 5 chess, but she doesn’t play chess 6 Ann. Ann can’t play chess. Helen often plays with Paul, because Paul plays 7 very well. Paul can 8 play basketball well. And he is 9 the school basketball club. He often 10 other students with basketball.
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