题目内容：

Most foodies (吃货) agree that eating healthy food is important. But sometimes making good food choices can be tough. Now, there are apps that can help people learn about the food they eat to improve their diets and their dining out experiences.

Cheese & Wine Pairing app

Wine and cheese can be a great combination. But which wines go best with which cheeses? Max McCalman’s Cheese & Wine Pairing app can help. It provides information about hundreds of different cheeses and advises wines to pair with each. Max McCalman’s Cheese & Wine Pairing app is free for iPhones and iPads.

Calorific app

What does 200 calories look like? It can be hard to picture. Calorific provides images of 200 calories worth of food. The pictures can help people on a diet and those who just want to eat healthier food. The app is free for iPads and iPhones. There is also a version that provides more information for a price.

HappyCow app

Vegetarians do not eat animal meat. Vegans do not eat any animal products. The HappyCow app is made for both groups. Users can search for vegetarian-vegan restaurants and stores around the world. A free version of HappyCow is available for Android that has ads and requires an Internet connection.

LocalEats app

Restaurant chains, like McDonald’s, can be found almost anywhere a person might travel. But sometimes travelers want to eat like locals. LocalEats is designed for that. It lists locally owned restaurants so users can try foods from that area. The app costs about a dollar.

1.If people want to go on a diet, they need________.

A. Cheese & Wine Pairing app.    B. Calorific app.

C. LocalEats app.    D. HappyCow app.

2.Which of the following apps is NOT free for iPhone or Android?

A. HappyCow app.    B. Calorific app.

C. LocalEats app.    D. Cheese & Wine Pairing app.

3.What is the main purpose of this article?

A. To show the differences in food apps.    B. To advertise the best apps for iPhones.

C. To introduce some healthy eating habits.    D. To inform foodies of some useful apps.