2. 外语
  3. Many people like to travel. The problem is getting your pet to the(1)______. In recent years, transporting pets on flights has g

Many people like to travel. The problem is getting your pet to the(1)______. In recent years, transporting pets on flights has g

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问题     Many people like to travel. The problem is getting your pet to the(1)______. In recent years, transporting pets on flights has grown more (2)_____ —and more expensive. All major carriers have(3)_____ raised the fees that they(4)_____ for bringing pets onboard, matching, or in some cases, (5)______, the fee for children flying alone. Fees (6)_____ depending on whether the pet flies under your seat, or as checked baggage, which(7)_____ extra handling.
    Pet safety has also become a more(8)_____ issue. Incidents of animals being lost, injured or dying have recently(9)_____. Thirty-nine animals died while flying aboard(10)jets last year, compared with 22 two years ago.
     (11)_____ those numbers are a small percentage of the hundreds of thousands of animals flown by the airlines each year, they expose the dangers that pets may face while traveling. Not that airlines don’t(12)_____ risks, but that some pets are liable to breathing problems or(13)_____ illness. Delta, which reported several dog(14)_____ last year, has changed its policy and now(15)_____ some breeds from its planes.
    Despite the inconveniences, airlines say they are going out of their way to be pet(16)______. Last year Frontier Airlines, in(17)_____ to demand, began accepting pets in the passenger cabin for the first time.(18)_____ it had transported pets only as baggage.
    If you are considering putting your pet on a plane, here are a few tips to(19)_____ the process. Don’t wait until the last minute to book, for airlines limit the number of pets in the cabin. Placing your pet on the floor of the car beforehand so it can feel the(20)_____ as it will on a plane.
(18)
选项 A、Usually
B、Generally
C、Obviously
D、Previously
答案D
解析 空格前的句子意思为“首次允许宠物进入乘客舱”，这是一种新的做法，空格后的句子表明“只是将宠物作为行李进行托运”，并采用过去完成时had transported，可知是以前的做法，所以选previously“以前”。
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