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问题 单项选择题

下列哪项属于中性粒细胞（）。

A、核圆形或椭圆形色淡，一般为颗粒所掩盖

B、胞质内的颗粒易溶于水

C、颗粒具有异染性

D、核染色淡、核仁明显

E、核一般分为2-5叶，胞质内有嗜天青颗粒和特殊颗粒

答案

参考答案：E

单项选择题

Are you interested in seeing the beautiful fall foliage of New England but tired of traffic jams and overbooked hotels Then this year forget the crowds in New England and see the beautiful colors of autumn in the Catskills.
These rugged mountains in New York State, just 90 miles northwest of New York City, are famous for the legendary tales of Rip Van Winkle, and more recently for the summer hotels mat sprang up in the region during the 1940s, 1950s, and 1960s. Families trying to escape the heat of New York City found the Catskills to be the perfect place to stay for a month or so each summer. By the late 1950s there were over 500 resorts and hotels offering nighttime entertainment as well as all kinds of outdoor activities. Famous comedies like Jackie Gleason, Joan Rivers, and Sid Caesar all got their start touring the hotel clubs here. Since the introduction of air-conditioning and cheaper air travel, however, families have stopped coming to the Catskills in such large numbers, chasing instead more distant locations at different times of the year. Many of the Catskills hotels closed in the 1970s, but some remain and have expanded and changed their facilities to meet the needs of today’s visitors.
Currently, there are many activities available to the traveler besides witnessing the changing colors of the leaves. There is an all-organic sheep farm where visitors can see how a traditional sheep farm operates. There are also hundreds of miles of scenic drives in the area. Route 42, for instance, is an excellent site for spotting bald eagles. For more information on vacations in the Catskills, call the office of Public Information.

From the passage, what might a visitor be lucky enough to do

A. See fall leaves in color.
B. See a kind of bird.
C. Work on a sheep farm.
D. Drive on scenic roads.
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填空题

电空制动控制器手柄由运转位直接移至中立位时，若产生初制动则原因之一可能是（）开路。
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