1. The panda's ............ habitat is the bamboo forest A. nature B. natural C. naturalized D. naturally 2. Learners can feel very .............. if an exercise is too difficult A. courageous B. encouraging C. unharmed D. harmless 3. Oil , coal and natural gas are ................. fuels made from decayed material from animal or plants A. unleaded B. smokeless C. solid D. fossil 4. Neil Armstrong , an American ....................... , was the first man to step on the moon's surface A. scientist B. cosmonaut C. astronaut D. astronomer 5. The Great Wall of China is considered one of the greatest wonders in the world .............. its magnificence and significance A. in spite of B. because C. instead of D. thanks to 6. Pioneers , ................... in isolated areas of the United States , were almost totally self - sufficient A. who living B. living C. lived D. that lived 7. ..................... on the phone A. It is his mother whom is B. It was his mother whom is C. It was his mother who is D. It is his mother who is 8. .................. a high level of blood cholesterol A. It is eggs that contain B. Those are eggs it contains C. It is eggs that contains D. It is eggs contain 9. Jenny .................... leave the hospital only fours days after the operation A. was able to B. could C. can D. will be able to 10. At last , they ............. get through the mountain in such a heavy rain A. can B. could C. are able to D. were able to 11. Despite yesterday's snowfalls , we ................ arrive at school on time A. could B. couldn't C. were able to D. weren't able to 12. The girl .................... tell what had happened to her after she had been unconscious for three days A. could B. will be able to C. can D. was able to