1. The upper atmosphere is believed to consist of a number of roughly concentric lay-ers, which include the troposphere(對流層)and stratosphere(平流層).
A.plainly
B.repeatedly
C.nearly
D. changeably
參考答案：1．正確答案是：C。本題考查近義副詞辨析。本句話的意思是：人們相信上層大氣有許多幾乎同心的層面組成，其中包括對流層和平流層。A．plainly意為“明白地”，clearly，例如：The mountain tops are plainly visible from the village．自該村望去，群山之巔清晰可見。B．repeatedly意為“反復(fù)地，再三地”，again and again，例如：He begged her repeat-edly to stop．他一再要求她停下來。D．changeably意為“易變地，常變地”。C．nearly意為“幾乎，差不多”，即almost，very close to，例如：It’s nearly time to leave．差不多是該走的時(shí)候了。此選項(xiàng)符合題意。
A.plainly
B.repeatedly
C.nearly
D. changeably
參考答案：1．正確答案是：C。本題考查近義副詞辨析。本句話的意思是：人們相信上層大氣有許多幾乎同心的層面組成，其中包括對流層和平流層。A．plainly意為“明白地”，clearly，例如：The mountain tops are plainly visible from the village．自該村望去，群山之巔清晰可見。B．repeatedly意為“反復(fù)地，再三地”，again and again，例如：He begged her repeat-edly to stop．他一再要求她停下來。D．changeably意為“易變地，常變地”。C．nearly意為“幾乎，差不多”，即almost，very close to，例如：It’s nearly time to leave．差不多是該走的時(shí)候了。此選項(xiàng)符合題意。