考研选择题英语答案解析如下：
1. 问题：The following sentence contains a sentence error. Which one of the following sentences is incorrect?
答案：D. The sentence "The cat was chasing the mouse, but the mouse was too fast to catch." is incorrect because "too fast to catch" is a phrase that should not be separated by a comma.
2. 问题：Choose the correct word to complete the sentence.
答案：C. The sentence "She was ___________ to the party last night." should be completed with "invited," making it "She was invited to the party last night."
3. 问题：Select the word that best fits the blank in the following sentence.
答案：B. The sentence "The ___________ of the book is very interesting." should be filled with "content," making it "The content of the book is very interesting."
4. 问题：Identify the sentence that contains a subject-verb agreement error.
答案：A. The sentence "Each of the students has his own laptop." is incorrect because "Each of the students" is singular, so the verb should be "has" instead of "have."
5. 问题：Choose the correct word to complete the sentence.
答案：D. The sentence "The ___________ of the experiment was to test the effects of different temperatures." should be completed with "objective," making it "The objective of the experiment was to test the effects of different temperatures."
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