1 . Philosophers and educators have devoted a good deal of time to ______ (explore) its meaning. (所给词的适当形式填空)

2 . Years before the term “artificial intelligence” ____________ (coin) in the mid-1950s, the theory ____________ (explore) by Alan Turing, one of the pioneers in the field of computer science. (所给词的适当形式填空)

3 . People have always wanted to learn more about space, so countries around the world are spending much time and money e ________ space. (根据首字母单词拼写)

4 . Dogs have a far wider hearing range than humans, enabling them to________ sounds far above a human’s limit.

A．explore

B．examine

C．detect

D．greet

5 . Never lose heart and continue to ________(探索) life since it is full of possibilities. (根据汉语提示单词拼写)

6 . Tricycles are worth using if you want to e_________ the narrow alleys of old Beijing. (根据首字母单词拼写)

8 . We devoted several days to _________(explore) the magnificent Maya sites.

9 . ______(explore) the teenage brain, the expert decided to write a book about how to help teenagers fight against attention problems. （所给词的适当形式填空）

10 . Huawei Research platform wants to partner with professional institutions and consumers to jointly e________(探索) the opportunities for the future. (根据汉语提示单词拼写)