题目

根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。How to Avoid DistractionsNowadays, it can be tougherthan ever to focus without getting distracted. Many of the thoughts, behaviorsand devices that play an important role in daily life turn out to bedistractions. Here are some tips on how to avoid distractions.Create a distraction-free environment.Shut off your phone andother electronic equipment. Before you dive into working, cleaning, writing orwhatever else you need to do, turn off or silence your cell phone and anything如图，把一个长方形的纸片对折两次，然后剪下一个角，为了得到一个钝角为120° 的菱形，剪口与第二次折痕所成角的度数应为（ ）A．15°或30° B．30°或45° C．45°或60° D．30°或60°