问题
单项选择题
以下生物中，属于兼性互利共生的是（）。
A．地衣
B．菌根
C．蜜蜂与月季
D．珊瑚
答案
参考答案：C
搜题请搜索小程序“爱下问搜题”
以下生物中，属于兼性互利共生的是（）。
A．地衣
B．菌根
C．蜜蜂与月季
D．珊瑚
参考答案：C
摘录信息（共5小题；每小题1分，满分5分） 阅读下面短文，根据所读内容在文后第53至第57小题的空格里填上适当的单词或短语，并将答案转写到答题卡上。 注意：每空不超过3个单词。 This is News on the Hour, Ed Wilson reporting. News One: The president and First Lady will visit Africa on a good will tour in May. They plan to visit eight African countries. News Two: Reports from China say the Chinese want closer ties between China and the U.S. and Western Europe. A group of top Chinese scientists start its ten-nation tour next month. News Three: In news about health, scientists in California report findings of a relationship between the drinking of coffee and the increase of heart diseases among women. According to the report in the American Medical Journal, the five-year study shows that: women who drink more than two cups of coffee a day have a greater chance of having heart disease than women who do not. That’s the news of the hour. And now back to more easy listening with Jan Singer.
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