2If an intense sunspot activity had occurred in 1857, the next one would have been in

 A.1858．  B.1862．  C.1865．  D.1868．  

3Careful observations and systematic studies of sunspots

 A.were made by ancient astronomers．  B.started in the early 17th century．  C.were made by Galileo only．  D.could be made without a telescope  

4The leading spot and the following spot are the names of

 A.two large sunspots．  B.a large spot and a small spot．  C.the two spots in a spot pair．  D.the central core and the ring around it．  

5Sunspots are cooler than the rest of the sun' s surface because

 A.they produce less energy．  B.they are buried in the sun．  C.they are far away from magnetic fields．  D.they are close to magnetic fields．  

补全短文

(第46～50题，每题2分，下面的短文有5处空白，短文后有6个句子，其中5个取自短文，请根据短文内容将其分别放回原有位置，以恢复文章原貌。共10分)1、Canada Ikea：What a Great Place for You to ShopThere are many different stores that people go to in order to buy various household goods.________（46）The Canada Ikea is not confined to one city alone in that country．Instead you will find there are many different branches spread out in many different localities．As with all of the Ikea stores the Canada Ikea deals mainly with selling top quality Swedish furniture（47）One facet（方面）of the Canada Ikea that its customers will like is that the store has the ability of catering（迎合）to their English speaking customers as well as their French customers．To make shopping for furniture and other goods easy the Ikea stores in every country are all set out in the same manner．（48）As a result of this the Canada Ikea is one that its local and foreign customers enjoy visiting．To help make it easy for you to shop for the items that you want there are large blue and yellow bags or shopping carts available（49）As you wander through the store you will find many interesting items that you can use for your home or even office With these products you will have a beautiful house that you can live comfortably in．（50）The Canada Ikea is a great place for you to shop．

150

 A.This furniture is designed to provide the home owner with stylish（时髦的）furniture that is also affordable and perfect for everyday use  B.With so many items to be found you are sure to want to buy everything that catches your fancy．  C.These bags and carts are perfect for the many different lamp shades，cushions（垫子），bed linens（亚麻布），toys and other medium to small sized objects that you want．  D.This makes it very easy for visitors from other countries to buy the items they need without wandering around the store trying to find their goods．  E.One such store that you can find in many different countries including that of Canada is．that of the Ikea（宜家）chain of stores．  F.The larger sized objects are displayed in the showrooms of the Canada Ikea stores．  

249

 A.This furniture is designed to provide the home owner with stylish（时髦的）furniture that is also affordable and perfect for everyday use  B.With so many items to be found you are sure to want to buy everything that catches your fancy．  C.These bags and carts are perfect for the many different lamp shades，cushions（垫子），bed linens（亚麻布），toys and other medium to small sized objects that you want．  D.This makes it very easy f