Gateway B1 Unit 9 Test

Imagine a house that travels at 28,000 kilometers per hour. It circles the Earth every 90 minutes, and from its windows, you can see sixteen sunrises and sunsets every single day. This is not science fiction; it is the International Space Station (ISS).

Scientists at a Swedish university have created a new type of battery made from wood. Yes, wood! This “wood battery” uses a material called lignin, which comes from trees. If they develop this technology further, we will have cheaper and more environmentally friendly energy storage. Unlike traditional batteries, which contain toxic chemicals, the wood battery is recyclable. However, if the researchers don’t solve the problem of low energy density, the battery won’t replace lithium-ion batteries in smartphones. But for large-scale energy storage (e.g., for wind farms), this is a major breakthrough. gateway b1 unit 9 test

(b) mustn't (because it is a strict prohibition). Imagine a house that travels at 28,000 kilometers per hour

"If he hadn't gone... he wouldn't have found..." Gateway B1+ Unit 9 Test Answer Key | PDF - Scribd Scientists at a Swedish university have created a

You must know which verbs are followed by an form (gerund) or a to + verb (infinitive).

If + present simple, will/can/might + infinitive.