答案：1.C [句意：虽然教授看到我们很吃惊，但还是热烈欢迎我们。Though surprised to see us＝ Though he was surprised to see us。] 2.B
3.(1)been promoted to (2)promoting their new products (3)was promoted manager 4.B
5.(1)在故事的结尾，小说的主人公自杀了。 (2)我把这件事委托一位朋友照管。 6.(1)D (2)A (3)A
7.(1)to；by (2)against (3)on (4)to 8.admire; for
9.had a great impact on
10.A [句意：——Kate, 你看起来很忧愁。——是的，我不知道怎样解决这个问题。at a loss 不知所措。“解决这个问题”是特指。]