2 . The fresh thin air, snow-covered mountains and graceful animals running on the plains are _______we’re here-to observe Tibetan antelopes, which are being hunted, legally, for their valuable fur. (用适当的词填空)

3 . ________ they discover instead is a work of art with a museum inside. Meier took some basic materials metal, stone and glass. (用适当的词填空)

4 . Despite the fact ________ a skywell’s size and design vary from region to region, it is almost always rectangular (长方形) and located in the core of a house. (用适当的词填空)

5 . On the first day of the Start of Autumn, usually people will weigh themselves and compare their weight to ______ it was at the Start of Summer. (用适当的词填空)

9 . Therefore our findings raise an exciting possibility _______ we may be able to promote health and happiness by developing positive attitudes such as optimism. (用适当的词填空)

10 . We should trust life and trust our own abilities to understand ________ is right and wrong, what decision to make and how to solve problems. (用适当的词填空)