A good vegan milk （純素奶） needs to look like milk and taste like milk，whether it contains fat or not.Vegan milk is only one example in the growing types of plant-based alternatives （替代品） to animal products，such as meat，cheese，eggs and fish.Burger King and McDonald's sell vegan pies.Last year the world's largest producer of canned tuna，Thai Union，began to sell a plant-based product.Growing sales show the growing taste for this type of food，which means alternative proteins have come a long way since 1980s.
   Producing techniques have been improved，resulting in better products and lower prices of them，which meet the needs of a growing number of people.Some vegetarians say no to meat，but yes to fish.Some people are trying to cut fat for health reasons.Fitness lovers want to develop muscular mass and strength without building up fat.Concerns about animal rights and greenhouse gas from raising livestock （家畜） are driving the environmentalists to limit their intake of animal-based proteins.As is reported，producing a gram of beef gives off 25 times the amount of greenhouse gas as producing a gram of tofu.
   However，plant-based proteins are a tough sell in giant markets like India，where diets are already plant-rich，or Nigeria，where meat-eating is a sign of being rich.That limits their global popularity.What's more，animal products，including milk and meat，are better for children's bone development，though lab-grown meat and dairy are becoming more nutritious.
   All this suggests that alternative proteins have far to go to replace the animal kind.Plant-based foods may no longer be only a side dish in diets，but their makers' place as the main dish is another matter.

（1）Why does the author mention vegan milk in the first paragraph？

D

D

A.To encourage a healthy diet.
B.To show people's growing taste.
C.To stress the importance of milk.
D.To introduce the topic of the passage.
（2）What's the main idea of Paragraph 2？

D

D

A.Ways to meet the needs of people.
B.Benefits of animal-based products.
C.Results of improved producing techniques.
D.Reasons for choosing plant-based products.
（3）Why are plant-based products unpopular in India？

A

A

A.Indian Diets are rich in plant.
B.Eating meat means being rich.
C.Plant-based products are produced in labs.
D.Plant-based products are bad for children.
（4）What's the author's attitude towards plant-based proteins？

C

C

A.Supportive.
B.Doubtful.
C.Objective.
D.Unclear.