The dental floss manufacturer is concerned that it will lose market share in the dental health market because the advertisement encourages people to switch from dental floss to mouthwash.
The dental floss company claims in its own advertisements that brushing and flossing after every meal is the most effective way to maintain good dental health.
Although mouthwash is an effective deterrent to gum disease, it is less effective than dental floss at removing plaque and preventing cavities between teeth.
Per usage, mouthwash is three times more expensive than dental floss, if the recommended amounts of both products are used.
The dentists who conducted the study on the effectiveness of mouthwash in preventing gum disease obtained their funding for the study from a company that manufactures mouthwash.
第1题：
from school because he is busy study what he has
第2题：
第3题：
A.commanded
B.suggested
C.proposed
D.advised
第4题：
第5题：
Ben has to study for the English test．（改为否定句）
Ben ______ ______ ______study for the English test．
第6题：
Sam has curly hair but his twin sister’s is quite ().
A、even
B、straight
C、uneven
D、regular
第7题：
It is likely that their group will get ahead of us. (英译汉)
第8题：
Let’s(has) broccoli， It's good for us．
第9题：
Your vessel has completed an inspection for certification and is issued a Temporary Certificate of Inspection. The Temporary Certificate ______.
A.has the full force of the regular Certificate of Inspection
B.expires six months after it is issued
C.must be exchanged for a regular Certificate of Inspection within 3 months
D.is retained in the custody of the Master
第10题：