49. A. having

　　B. watching

　　C. making

　　D. helping

　　50. A. land

　　B. fly

　　C. fall

　　D. wait

　　51. A. houses

　　B. flats

　　C. rooms

　　D. homes

　　527. A. joyfully

　　B. anxiously

　　C. soundlessly

　　D. worriedly

　　53. A. tell

　　B. know

　　C. remember

　　D. accept

　　54. A. open

　　B. active

　　C. clear

　　D. honest

　　55. A. and

　　B. so

　　C. because

　　D. until

　　四、阅读理解

　　（山东省莱州一中2017届高三第二次质量检测）

　　A

　　A migraine(偏头疼)can cause disabling pain. People may not feel back to normal for hours or even days, Migraines are most common among young adults and middle-aged people. In the United States, about eighteen percent of women and six percent of men percent of men report having migraines.

　　People who suffer from migraines can find that different“triggers” (诱因)in different

　　people may get a headache started. Stress can act as a trigger. So can chocolate in some people. Many migraine sufferers say hot weather and low barometric pressure(大气压）can act as triggers. But researchers say they did not have much scientific evidence of that—until now.

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