正确答案: A

正确

题目：蕨类植物的叶有单叶也有复叶。( )

解析：A

查看原题

举一反三的答案和解析：

[单选题]角苔属植物为具背腹之分的叶状体。( )

正确

[单选题]The new traffic law is mainly intended to .

lower the rate of traffic accidents and injuries

[单选题]自动乳化的基本原理是在何种条件下乳状液中的乳滴南于界面能降低，而形成更小的纳米级乳滴（ ）。

在特定条件下

[单选题]有关四省（区）农业生产地叙述．正确的是

④省（区）北部灌溉用水主要是地下水和高山冰雪融水

[单选题]请阅读下列短文，从每题所给的四个选项（A、B、C和D）中，选出最佳选项，并在答题卡上将该选项的标号涂黑。A

Untidy.

[单选题]BJuly 21st , 2007 was a typical English summer’s day — it rained for 24 hours! As usual, I rushed home from work at midday to check on the house. Nothing was amiss. By the time I lift work at 5 pm, however, the road into our village was flooded. Our house bad never been flooded but, as I opened the front door, a wave of water greeted me. Thank God the kids weren’t with me, because the house was 5 feet deep in water . We lost everything downstairs. And the plaster had to be torn off the walls, ceilings pulled down.

Wrong.B． Missing.C． Right. D． Found.