C.The students couldn’t concentrate in her class.
D.The students couldn’t answer questions gently.
2.If we are curious,we
.
A.will desire to be rewarded
B.may forget undesirable things more easily
C.may memorize something better
D.will have more energy to do outdoor activities
3.Malaia gave the example of a kid in Paragraph 4 to prove
.
A.multiplication tables are difficult to learn
B.math is the basis knowledge for space exploration
C.becoming an astronaut is a dream of many kids
D.curiosity also helps us learn boring things
4.What do the underlined words “that problem” refer to?
A.Students get bored with learning.
B.Students ask too many foolish questions.
C.Students want to explore the mysteries of science.
D.Students take drugs to produce dopamine.
B
A poor set of curtains may not just mean you wake up too early—they could also make you fat.Sleeping in a room with too much light has been linked to an increased risk of piling on the pounds,a study shows.
Greater exposure to light at night raised both body mass index and waist size in more than 113,000 women taking part in the British study.The study followed the women for 40 years to identify root causes of breast cancer.Obesity is a known risk factor for the disease.
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