第31题: [单项选择]Jane was nervous________. A. because she was worried about the birthday party B. because she found this history course very challenging C. because she thought her term paper might be late D. because she had a very hard time sleeping 参考答案:C
第32题: [单项选择]不孕症最常见的原因是 A. 较大的子宫肌壁间平滑肌瘤 B. 输卵管炎症 C. 宫颈原位癌 D. 子宫内膜异位症 E. 卵巢囊肿 参考答案:B