【单选题】When the truth of sentence (a) guarantees the truth of sentence (b), and the falsity of sentence (b) guarantees the falsity of sentence (a), we can say that _____. A. sentence (a) entails sentence (b) B. sentence (a) presupposes sentence (b) C. sentence (a) is inconsistent with sentence (b) D. sentence (a) contradicts sentence (b)

中国大学MOOC: The following exercises will help you gain greater understanding about how prepositional phrases work. Choose the best answer to complete each sentence.There are lots of birds nesting _____________________.

What type of sentence does the sentence fall into: “The brain and the head need a continuous supply of blood.”? ( ) A: Simple sentence B: Compound sentence C: Complex sentence D: Compound-complex sentence

Part II. Identify the sentence type. (Simple sentence=简单句；Compound sentence= 并列句；Complex sentence=复合句；Compound-complex sentence=并列复合句)It is raining; I have to find a shelter. A: Simple sentence B: Compound sentence C: Complex setnence D: Compound-complex sentence

What type of sentence does the sentence fall into: “Job opportunities are available to college students in summer holidays.”? ( ) A: Complex sentence B: Compound-complex sentence C: Simple sentence D: Compound sentence

In a paragraph, the topic sentence is _______. A: always the first sentence B: always the last sentence C: usually, but not always, the first sentence D: usually, but not always, the last sentence

Which sentence is the inverted sentence?

Supporting sentence is a sentence that develops the topic sentence by giving specific and factual details.

Not only a complete sentence, but a sentence fragment treated as a sentence, should begin with a letter.

Which sentences offer evidence to the claim? A: Sentence ⑦⑧ B: Sentence④⑤ C: Sentence①②③