1.Online catering revenue in 2016 made up _____ of the country’s total catering revenue.

A about 5%

B about 10%

C about 16%

D about 35%

解析：选B。细节理解题。根据第一段China's online catering revenue increased to 350 billion yuan in 2016, about 10% of the country's total catering revenue, according to figures from the China Cuisine Association.可知2016年我国网络餐饮业收入超过3500亿元，约占全国餐饮总收入的10%，故选B。

2.Why did the online catering develop rapidly?

A Because people become richer.

B Because the third party platforms grew.

C Because the online catering was popular.

D Because young people like the online catering.

解析：选B。细节理解题。根据第二段The online catering developed rapidly because of the growth of third party platforms...可知网络餐饮的迅猛发展得益于第三方平台的答案，故选B。

3.The draft supervision document is for _____.

A regulating the market

B controlling the population

C providing the rights of workers

D regulating the online catering

解析：选D。细节理解题。根据第三段第一句To regulate the online catering, the China Food and Drug Administration published a draft supervision document.可知，故选D。

4.What will the draft ensure?

A The draft will ensure all stores are clean.

B The draft will ensure food is healthy.

C The draft will ensure consumers are comfortable.

D The draft will ensure all stores are qualified and well regulated.

解析：选D。细节理解题。根据第三段最后一句The draft will ensure all stores are qualified and well regulated.可知，故选D。

5.What’s the best title for the passage?

A The Catering Declined Rapidly.

B The Catering Developed Slowly.

C The Online Catering Declined Rapidly.

D The Online Catering Developed Rapidly.

解析：选D。文章标题题。全文说明了2016网络订餐发展迅速，故选D。