請依下文回答第 46 題至第 50 題
Researchers have pointed out that it is important to know one’s blood type. When Harvard
scientists 46 more than two decades of data on more than 77,000 people, they found that people with type AB
blood had a 23 percent increased risk for heart disease compared to people with type O blood. 47 with type B
blood had an 11 percent higher risk and people with type A blood had 5 percent greater risk of heart disease.
Researchers aren’t sure 48 , though. But they posit that type A blood is associated with LDL cholesterol
and that type O blood, 49 is associated with reduced risk, may contain a chemical that boosts blood flow and
prevents clots. However, researchers are quick to point out that lifestyle factors 50 weight, smoking, and diet,
which, unlike blood type, are modifiable and have a much greater impact on heart disease. 【題組】49 (A) who (B) what (C) which (D) when
請依下文回答第 46 題至第 50 題：
When failing to get a travel companion, some would rather give up or put off their travel plans than travel by themselves.
They worry about safety, having no one to talk to, and more expensive accommodations. Indeed, there are potential risks
as well as some minor problems when you travel alone. However, the advantages definitely outweigh the downsides.
One of the best reasons for solo travel is that you are absolutely free when making any decision. You can do what you
want to do, travel at your own pace, and change your plans without asking anyone. You don’t have to wait for your
companion or spend time negotiating where to eat or what time to get up. If you want to stay in bed a little longer, you
won’t feel guilty or annoyed just because your partner has been ready and waiting for you. Furthermore, solo travel is a
chance for you to listen to your inner voice, to learn to make a decision and to build up your own confidence. Exploring
a place leads you to explore yourself at the same time. Without anyone to rely on, you have to be independent and deal
with any challenge. Another thrill of solo travel is to meet new people. It’s easy to meet people on buses and trains and
in cafes. Exposure to locals enables you to know more about local cultures.
If safety concerns still halt you from packing up and setting off, follow the tips below to have a safe trip. First, don’t
look like a tourist. Avoid walking around and reading your guidebook at the same time. Always check your maps before
leaving your hotel. Second, you have to tell a lie when you have to. Sometimes it is better not to tell others you are
traveling alone: “Excuse me, can you direct me to the train station? I have to meet my friend.” There are also times when
you have to say “No.” Solo travelers, especially women, tend to draw intense attention in some hospitable cultures.
Therefore, it will be wise of you to learn to say “No, thank you” in the local language. With these tips in mind, solo travel
can be a joyful and even life-changing experience. 【題組】48 According to the passage, which of the following is likely to happen when you travel with someone?
(A) You can get to know more about yourself.
(B) You can save more money on airline tickets.
(C) You tend to draw the attention of pickpockets.
(D) You need to take your partner’s interest into consideration.
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