34.According to the researchers， what is the reason for some people with autism to have difficulty in non-verbal social interactions?

6. —Can you tell me something about Dazhou， Lin Hui? —No problem. It’s (______)the northeast of Sichuan Province and it’s famous(______)its natural gas.

5. —Hurry up， Jason! We’re going to the cinema， but the clothes still need (______). —Don’t worry. I think thirty minutes (______)enough.

4. —Jessica， it’s raining (______)outside. —Oh， you should be (______)when you drive to work.

3.—Sandy， could you fold the clothes for me? —Why (______)? I am not available. You can ask David to do (______)instead.

2. —I want to learn more about the history of Tang Dynasty. —Why not use the Internet to find more (______)?

1. Natalia， (______)exchange student from Spain， is (______)university student in Sichuan now.

40. The Salvation Army believes that (______).

39. Paul Brown regards leaving home in such circumstances as (______).

38. The man or woman left behind usually (______).

37. Most people who leave their families behind them (______).