问题补充：
Some advertisementspictures or words of experts to show people how good the products are.
A. are consisted of
B. are made of
C. consist of
D. are made up
答案：
A. are consisted of
B. are made of
(答案→)C. consist of
D. are made up
解析：考查短语。题中consist of=be made up of“由……组成”之意。句意：一些广告由图片和专家的话组成，旨在向人们表明产品是多么的好。
