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几种短周期元素的原子半径及主要化合价如下表： 元素代号XYZW 原子半径/pm1601437066 主要化合价＋2＋3＋5、＋3、－3－2 下列叙述正确的是( ) A．X、Y元素的金属性X<Y B．一定条件下，Z单质与W的常见单质直接生成ZW2 C．Y的最高价氧化物对应的水化物能溶于稀氨水 D．一定条件下，W单质可以将Z单质从其氢化物中置换出来THEATRE City Varieties The Headrow, Leeds.Tel.430808 Oct10-11only A Night at the Varieties. All the fun of an old music hall with Barry Cryer, Duggle Brown, 6 dancers,  Mystina, Jon Barker, Anne Duval and the Tony Harrison Tri- o. Laugh again at the old jokes and listen to your favourite songs. Performances：8pm nightly. Admission：￡5；under 16or over 60：￡4. York Theatre Royal St Leonard's Place, York.Tel.223568 Sept23-Oct17 Groping for Words - a comedy by Sue Townsend. Best known for her Adrian Mole Diaries, Townsend now writes about an evening class which two men and a woman attend. A gentle comedy. Admission: First night, Mon：￡2：Tues-Fri：￡3.25-5.50；Sat：￡3.50-5.75. Halifax Playhouse King's Cross Street, Halifax.Tel.365998 Oct 10-17 On Golden Pond by Ernest Thompson. This is a magical comedy about real people. A beautifully produced,  well-acted play for everyone. Don't miss it. Performances：7：30pm. Admission：￡2.Mon：2seats for the price of one. Grand Theatre Oxford Street, Leeds.Tel.502116 Restaurant and Café. Oct 1-17 The Secret Diary of Adrian Mole, Aged 13. Sue Townsend's musical play, based on her best-selling book. Performances: Evenings 7：45October 10-17, at 2： 30pm.No Monday performances. Admission: Tues-Thurs：￡2-5；Fri＆Sat：￡2-6. 1.Which theatre offers the cheapest seat？ A. Halifax Playhouse.  B. City Varieties. C. Grand Theatre.     D. York Theatre Royal. 2.If you want to see a play with old jokes and songs, which phone number will you ring to book a seat？ A.502116      B.223568 C.365998      D.430808 3.We may learn from the text that Sue Townsend is ____ . A. a writer     B. an actress C. a musician   D. a director