6. The __________________ , stretching 21,196 meters, is the longest defending wall in the world. ‍‍‍

中国大学MOOC: 6. The __________________ , stretching 21,196 meters, is the longest defending wall in the world.

Try _______ your legs and pulling your toes upwards. A: attaching B: stretching C: enabling

( ) is an important means of strengthening metal materials. A: elastic deformation B: plastic deformation C: stretching D: fibrous structure

The soreness comes from _____ your mouscles in an uncommon way, for example, jumping on a bike. A: straining B: twisting C: scratching D: stretching

The sentence “The green mountains stretching 10-li<br/>distance surround the city” described () A: Changshu B: Nanjing C: Suzhou D: Yangzhou

In a linear stretching transformation ( s=ar+b ),when a and b take any value,can be gray value respectively from 24 and 156 to 15 and 213 ?

What does the gym daily activities and is led by fitness coaches?( ) A: “Perfect abdominal muscle training” B: “Pilates” C: “Vigorous Stretching Training” D: “Yoga”

中国大学MOOC: In a linear stretching transformation ( s=ar+b ),when a and b take any value,can be gray value respectively from 24 and 156 to 15 and 213 ?

He sat leaning against the back of the seat with his legs straight in front of him. A: stretching out B: stretch out C: stretched out D: to stretch out