写出下列词语的反义词。

延误——____         允许——____

小明在做“探究凸透镜成像规律”的实验时，凸透镜的位置固定不动．实验操作规范，在图示位置时，烛焰恰好在光屏上成清晰的像．

    An American skydiver has survived a 7, 600-meter jump from an airplane, although he did not use a parachute(降落伞). Luke Aikins dropped into a huge safety net on Saturday after falling for about two minutes over the desert in California. Aikins reached a speed of 193 kilometers per hour during the jump. He fell safe into a net. Cranes(起重机) ____ (hold) the net about 65 meters over the desert floor. The 42-year-old husband and father has jumped out of planes thousands of times, but never once  ____he left a plane without a parachute. Aikins said he was nervous before this jump. “We're talking about jumping without a parachute,” he told reporters. "I take that very  ____(serious). It's not a joke.” Aikins prepared for two years  ____(make) the jump. Three skydivers with parachutes made the jump with him. They recorded the event with a video and carried the  ____ (equip) that Aikins needed, like an oxygen mask. Aikins rolled in the air just moments before he hit the net so as to land on his back. The sky-diver did not move for several seconds as the net was lowered to the ground. Then, Aikins stood, waved his arms and hugged his wife.

动物通过运动提高了适应环境的能力，蜥蜴的主要运动方式为（　　）