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【判断题】
双子叶植物根和茎的木质部具有原生木质部和后生木质部。A.
正确
B.
错误
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参考解析：
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皮皮学刷刷变学霸
举一反三
【单选题】虽然解决了桥梁构造设计的难题，实际建造中仍然面临许多困难。
A.
Although the problem of the design for the structure of the bridge has been overcome, we are still confronted with many difficulties concerning its actual construction.
B.
Although the problem of the design for the structure of the bridge has been overcome, we still confront many difficulties concerning its actual construction.
C.
/
D.
/
【简答题】教师被人们誉为“灵魂的工程师”，这说明教师扮演了（ ）角色。
【单选题】虽然解决了桥梁构造设计的难题，实际建造中仍然面临许多困难。
A.
Although we have overcome the problem of the design for the structure of the bridge, we are still confronted with many difficulties concerning its actual c onstruction.
B.
Although the problem of the design for the structure of the bridge has been overcome, we still confront many difficulties concerning its actual construction.
C.
/
D.
/
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