在技术突变情况下两国产业发展生命周期模型的Ⅲ阶段，发达国家在新技术范式下的产业正处于扩张时期，迎来了产业发展的第二春，进入产业发展的（）。发展中国家进入产业调整时期，在技术极限、创新停滞和新技术范式的影响下，旧产品市场需求迅速萎缩，原技术范式下的产业进入（）。
A.振兴期、调整期
B.扩张期、调整期
C.振兴期、衰退期
D.扩张期、衰退期
参考答案：C
| In most cases, you can transplant a tree successfully, at any time, if you follow the instructions for planting a tree. The most important thing is to dig out enough roots, but this process is difficult with a large tree. When you dig out the tree, leave a ball of earth around its roots. This ball of earth should measure about a foot wide for every inch of the tree trunk’s diameter. Dig deep enough to avoid cutting off too many taproots. It is wise to call in a professional tree expert to transplant a tree more than a few inches in trunk diameter. |
To decide whether you can successfully transplant a tree yourself, you should ______.
A．select your location carefully
B．measure the ball of earth around the tree roots
C．measure the diameter of the tree trunk
D．cut off as many taproots as you can reach