2. Many of the recording instruments used in various branches of science are kymographs.(vary是 动词, 不能修饰名词 ,应该用形容词)
3. The main advertising media includes direct mail, radio, television,magazines and newspaper.(这是主语是第三人称单数形式,谓语应用单数形式)
4. Pop Art was a movement of the 1950's and 1960's whose imagery was based on readily recognized American products and people.
(这是非限制性定语从句,先行词应当是他们的想象)
5. Because the tachinid fly is a parasite of harmful insects, many species have been imported into the United States to combat insect pests.(species 是可数名词,单复数同形,不能用much 修饰):loveliness:
对否,scrupulous_bach ?
