[单选题]What is the researchers’ understanding of the New Zealand study results?

正确答案 ：D

The connection between TV and education levels is difficult to explain.

[单选题]DOn May 23,1989, Stefania Follini came out from a cave at Carlsbad, New Mexico. She hadn’t seen the sun for eighteen and a half weeks. Stefania was in a research program, and the scientists in the program were studying body rhythms(节奏). In this experiment Stefania had spent 130 days in a cave, 30 feet in depth.During her time in the cave, Stefania had been completely alone except for two white mice. Her living place had been very comfortable, but there had been nothing to tell her the time. She’d had no clocks or watches, no television or radio. There had been no natural light and the temperature had always been kept at 21℃.

正确答案 ：H

she was the subject of a study

[单选题]小麦、玉米拔节是居间分生组织活动的结果。( )

正确答案 ：A

正确

[单选题]

正确答案 ：A

foreing

[单选题]睡莲目植物花部3基数，心皮3至多数。( )．

正确答案 ：A

正确

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