问题
单项选择题 A1型题
亚洲各国儿童与非裔和欧裔美国儿童相比，生长发育的特点是（）。
A.婴幼儿开始骨龄落后
B.生长发育阶段骨龄一直落后
C.婴幼儿开始骨龄超前
D.青春期阶段骨的愈合速度落后
E.青春期骨骼减慢生长
答案
参考答案：A
解析：亚洲各国儿童生长发育的共同特点是，婴幼儿开始骨龄落后于非裔和欧裔美国儿童，但青春期阶段骨的愈合速度显著超过后两者。
搜题请搜索小程序“爱下问搜题”
亚洲各国儿童与非裔和欧裔美国儿童相比，生长发育的特点是（）。
A.婴幼儿开始骨龄落后
B.生长发育阶段骨龄一直落后
C.婴幼儿开始骨龄超前
D.青春期阶段骨的愈合速度落后
E.青春期骨骼减慢生长
参考答案：A
解析：亚洲各国儿童生长发育的共同特点是，婴幼儿开始骨龄落后于非裔和欧裔美国儿童，但青春期阶段骨的愈合速度显著超过后两者。
阅读下列短文，根据短文中的信息完成文后表格。在答题卡标有题号的横线上，写出空缺处所填单词的正确形式。（每空一词） The haze（雾霾）season is back. How much do you know about haze? Haze can also be called “Smog”. The word "smog" is from the words “smoke” and “fog”, it first appeared in the early 20th century, It is a kind of air pollution（污染）caused（导致）mostly by cars and factories. Smog will do great harm（伤害）to your health, especially lungs（肺）.It can make you cough and cause skin and eye problems. It seems that we can do nothing to stop it, but only wait until the wind blows all the smog away. However, there are some easy ways to prevent it hurting you. Here are some of them. 1. Don’t do exercise in the open. Exercising in the open makes you breathe（呼吸）deeply, and you will take in the particles（颗粒物）deep into your lungs. 2. Stay indoors and keep the air clean. If you can, just stay in your room and keep the doors and windows closed. Remember to air your room twice a day, you can open the window at noon or at night for half an hour. 3. Wear a mask. Paper and cotton masks can not help you in the haze weather. Some special masks, such as N95 masks, can keep you from breathing in the particles in the air. 4. Change your diet. Scientists find that vitamin A, C and E can greatly help protect your eyes, nose and lungs. So eat more green vegetables and fresh fruit everyday. What’s more, do not eat food with too much fat（脂肪），it’s bad for your lungs.
| |||||||||||