题目内容：

下面文章中有五处(第31—35题)需要添加一个问题。请从以下选项(A、B、C、D、E和F)中选出符合各段的提问。选项中有一项是多余选项。

A. When does flu season start?

B. Do I really need a vaccine(疫苗) every year?

C. Do I really need to be vaccinated against the flu?

D. I am afraid of needles(针). Can I take medicine instead?

E. What are the risks(风险)?

F. How many viruses(病毒) change every year?

The weather becomes colder and colder. You see people sneezing and getting a runny nose. It's time to think about getting vaccinated to protect yourself against the flu. Below are some questions and answers about the illness.

Q: 1.

A: Yes. The Centers for Disease Control and Prevention(CDCP) in the US says that it's better to get a flu vaccine if you are 6 months old or older.

Q: 2.

A: Yes. Public Health officials look at which flu viruses will be the most common every year. Then they set a formula(配方) to work against those special viruses. So the formula can change from year to year.

Q: 3.

A: It usually begins in October and can last through May, with the season peaking(达到高峰) in February. But people don't know seasonal peaks may be different in different places.

Q: 4.

A: Unluckily not! But now, there is a new, less scary way. It uses a new needle which causes less arm­ache later. People aged from 18 to 64 can have this kind of vaccine.

Q: 5.

A: Serious problems from flu vaccines seldom happen. Common problems include: soreness or redness where the shot was given, fever, headache, and a cough. People with allergies(过敏), especially to eggs, should talk to their doctors before getting a shot.