题目

具有下列电子排布式的原子中，半径最大的为( ) A. 1s22s22p63s1    B. 1s22s22p63s23p64s1    C. 1s22s22p63s2    D. 1s22s22p63s23p64s2 答案：B 阅读理解。     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。      Shoppers who carefully plan their visit to the grocery store can save money on their grocery bills.   1   Shoppers should visit the grocery store on a full stomach by scheduling their trip immediately after a large meal. If that's not possible, they should find something healthy to eat while preparing a grocery list.   2        Although having a list and sticking to it is the most important  factor  in  saving  money, shoppers  must prepare lists wisely in order to save.    3    Many special buys are announced through the local newspapers, so buying the "grocery issue" is worth the investment (投资). However, it's important to remember that many newer, more expensive products first offered through coupons may not yield enough savings for shoppers to give up the product they usually buy.         4    Once at the store, the shopper who wants to save money  should  follow  a  few  more  rules. The shopper should not stay longer than necessary, because bills go up each minute the shopper is in the store. So, setting a time limit and a cost limit can hold down the bill.         5    If the grocery list is a short one, some shoppers choose to use the small handheld basket instead of the roomy grocery cart. A. A carefully planned list should include in season    produce and any items on sale or discounted     through  coupons (优惠券).B. Of course, the shopper should stick strictly to the    shopping list and resist the temptation to buy      additional items.C. People who are full are less tired and more likely to    buy what they want.D. Now that the shopper has completed the grocery list,it's time to leave for the store.E. You should keep your shopping list carefully in case     you can exchange it for coupons.F. Most shoppers are less persuaded to buy extra goods     when they are not hungry.G. Shopping when not hungry, sticking to a grocery list,and following a few simple rules will cut down      the    grocery bill.