低纬度地区的对流层顶都远（）于中、高纬度地区的对流层顶。
A.等
B.低
C.高
参考答案：C
下列关于某些营养物质的化学性质描述错误的是
A．淀粉遇加碘食盐溶液会变蓝
B．蛋白质遇重金属盐会失去原有的生理功能
C．油脂在人体内能消化，氧化分解，释放出热量
D．葡萄糖在植物体内可转化为蔗糖、淀粉或纤维素
下面每一句中均有一处错误，请找出并在左边的横线上改正。
( ) _________ 1. Excuse me, can I have anything to eat?
A B C D
( ) _________ 2. Joy has long hair. She is as slimmer as Betty.
( ) _________3. Max often tells funny stories and makes us happily.
( ) _________4. I feel comfort when I lie in bed.
( ) _________5. She is 35 years old. She is older of the two sisters.
