根据第一段"Do you know how to make a parachute(降落伞) by yourself? Have you tried to make the parachute stay in the air longer?"可知,本文是通过提问来开篇 的。 故选 A 。 27.C 【解析】 词义猜测题。 结合语境可知,该词后面句子"But it's not too difficult to make a simple one"是对...
We needed to make a parachute with materials that were 3.(give) by our teachers. We found it difficult to make the big parachute by 4.(we). But it was not too difficult to make a simple one.First, we cut a plastic bag into a round shape.Next, we used a needle and some threads...
Learning how to make a parachute is pretty simple. A toy parachute typically has three parts: the parachute material, strings, and a person or weight. The choice of material for each part of the parachute is really up to you. The parachute material itself could be made from plastic, cloth...
Polyamide fabrics like nylon were commonly used as parachute materials during World War II, and when the war concluded, a shortage of fabrics caused many women to make dresses out of recycled parachutes. As a result, the use of polyamide in women's apparel became popularized, but pure versions...
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Learn here how to make you own Pretty pencil holder with the help of our step by step craft lesson for kids.
The hang glider is actually a triangle-shaped airfoil, a modified parachute (known as a flexible wing) made of nylon or Dacron fabric. The triangular shape is maintained by rigid aluminum tubes and cables and is designed to allow air to flow over the surface to make the wing rise. Newer,...
Repeat this to yourself as you pack. The unknowns of traveling make us want to surround ourselves with familiar items but this kind of ‘what if’ thinking is a fast-track to a heavy pack. If you aren't certain you'll use it, you probably don't need it...
Stretched to its limit, the thin synthetic rubber of the balloon bursts and sends the tiny radiosonde plummeting back toward Earth. Within seconds, the wind catches a small, orange parachute and slows the device's descent. Hours later -- and hundreds of miles from where it first lifted off ...