C) 根据短文内容，从下面方框中选择适当的单词或短语填空，使短文内容完整正确。
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People often talk on their mobile phones when they are driving. But talking or sending messages over a mobile phone can be as
1 as drunk driving. They can’t pay more attention to the road safety any more. Because of this, about 330,000 people are hurt and more than 2,000 people
2 every year.
Now, an American company invented a key by using Bluetooth technology
3 help people drive safely. With the key, a driver can’t talk or send messages when driving a car.
With Bluetooth technology, when the driver is driving, the phone will
4 all incoming calls and messages by itself with “I am driving now. I will call you later.” The only calls allowed out are to emergency services. When the driver
5 the car, he then can use the phone. This is all about saving lives and safer driving.