题目内容
（请给出正确答案）
Which of the followingtells us how caffeine affects sleep？
A.It blocks production of the enzyme that stops melatonin production.
B.It interrupts the flow of the hormone that prevents people from sleeping.
C.It halves the body's levels of sleep hormone.
D.It stays in the body for many hours.
安装简答题APP，拍照搜题省时又省心！
更多“Which of the followingtells us…”相关的问题
A、won’t use his legs much longer.
B、broke his legs.
C、won’t live much longer.
D、will lose his legs.
A.Different effects of caffeinated coffeeand decaf on sleep.
B.Lotan Shilo's research design on sleep.
C.What the subjects did after drinking decafat night.
D.Why some subjects took half an hour toall asleep.
A.critically
B.helplessly
C.politely
D.quickly
A.Taino dishes are important in Puerto Rican cooking.
B.Food imported by foreigners isn't really Puerto Rican.
C.Puerto Rican cooking has many outside influences.
D. African foods have probably had the most influence
A.They live from paycheck to paycheck.
B.They don't have the habit of saving money
C.They work long hours
D.The want to be healthy eaters.
为了保护您的账号安全，请在“简答题”公众号进行验证，点击“官网服务”-“账号验证”后输入验证码“”完成验证，验证成功后方可继续查看答案！
微信搜一搜
简答题
微信搜一搜
简答题
如搜索结果不匹配，请 
