Задание

Прочитайте текст и заполните пропуски A–F частями предложений, обозначенными цифрами 1–7. Одна из частей в списке 1–7 — лишняя. Занесите цифры, обозначающие соответствующие части предложений, в таблицу.

As you look for planets, like Mercury and Venus, and try to identify different constellations, some of the points of light appear to flicker. Are the stars twinkling? Or are your eyes playing tricks on you? Don't worry! It's not an optical illusion. When you're stargazing, stars often do appear to be twinkling, and A__________________. Scientists call this twinkling phenomenon astronomical scintillation. Earth's atmosphere can be quite turbulent at times. B__________________, it varies in both density and temperature. To reach your eyes, light from distant stars must pass through Earth's ever-changing atmosphere. C__________________, it gets refracted in different directions constantly. Your eyes may latch onto a pinpoint of light from a particular star and then, a fraction of a second later, it may appear to be in a different place. Our eyes interpret this as twinkling. However, it's usually only stars that really appear to twinkle. Planets, for example, rarely appear to twinkle. This is because they are much closer to Earth and thus appear larger. The greater amount of light reflected by planets isn't affected by the atmosphere D__________________. E__________________, it's very frustrating for astronomers. To overcome the effects of Earth's atmosphere, astronomers prefer to rely upon space-based telescopes, such as the Hubble telescope, whenever possible. When they must use land-based telescopes for observations, astronomers prefer telescopes F__________________. These telescopes use many tiny mirrors that can adjust rapidly to changing atmospheric conditions to minimize astronomic scintillation.

1. as it stretches high into the air

2. that feature advanced adaptive optics

3. while twinkling starlight may seem romantic to some

4. it is Earth's atmosphere that's to blame

5. as noticeably as the light from distant stars

6. as the light travels through the atmosphere

7. that vary in temperature and density

A B C D E F

Часть предложения