抗坏血酸注射液处方中加入亚硫酸氢钠，作用是A．络合剂 B．抗氧剂 C．抑菌剂 D．p

劳动法的最主要表现形式是（）

A.劳动规章

B.劳动法律

C.国务院劳动行政法规

D.地方性劳动法规

男性，45岁。慢性支气管炎15年，呼吸困难突然加重1天，伴右侧胸痛。查体：发绀，桶状胸，右肺呼吸音减低，右肺叩诊鼓音，左肺散在干啰音，心浊音界缩小，剑突下可触及心脏搏动。考虑诊断为（）

A.慢支、肺气肿、肺部感染

B.慢支、肺气肿、早期肺心病、右侧气胸

C.慢支、肺气肿、右侧气胸

D.慢支、肺气肿、早期肺心病、右侧胸腔积液

E.慢支、肺气肿、右侧胸腔积液

The climate of Asia can ___ be spoken of as a whole.

A．almost

B．hardly

C．nearly

D．mostly

阅读理解。

                                                Buy Tickets Online-No Waiting in Line

     London's best attractions can get very busy during weekends and holiday seasons. For example, there is

always a long line in front of Madame Tussauds Waxwork Museum (杜莎夫人蜡像馆)! It is highly

recommended that you buy tickets online to beat the crowd and they cost less!

                                            Tickets for Madame Tussauds( Flexible,$25)

      Madame Tussauds Waxwork Museum is the world-famous collection of wax figures of famous people.

Mix with the famous at the world-famous collection of wax figures. A must-see attraction for London. Beat

the long queue at the gate-buy tickets online!

                                    Tickets for Tower of London plus River Cruise ( 4. 5 hours,$66 )

     Tower of London is one of the world's most famous and spectacular fortresses (壮观的堡垒 ). Discover

its 900-year history as a palace, fortress, and prison. A river cruise on the Thames, a visit to Tower of London

and drop off at St. Paul's Cathedral. If you only have a day in London, take one of the London's bus tours. If

you have kids, they will love it! 

                                                     Tickets for London Duck Tours( 80 mins,$30)

     Don't miss this exciting trip created for visitors to London, enjoying the sights by river! No one has ever

seen anything like it before on the streets of London, let alone the river! It is more than just a sightseeing

tour-it's an adventure. Don't miss this one!

                                                 Tickets for Discovering London(9 hours,$100)

      London's Best-selling Tour! A day bringing history, pageantry (壮观) and sights of London to life including

a Pub lunch and Thames Cruise. Explore the best of London with a morning tour of the world's most famous

city. Your experienced guide will take you through Westminster Abbey, Changing of the Guard at Buckingham

Palace, and Tower of London.

1. The underlined word "recommended" can best be replaced by ______.

A. debated

B. accepted

C. suggested

D. forbidden

2. If you want to visit St. Paul's Cathedral, you may choose _____.

A. Tickets for Madame Tussauds

B. Tickets for Tower of London plus River Cruise

C. Tickets for London Duck Tours

D. Tickets for Discovering London

3. According to the passage, if you have one day in London, you'd better travel  _____.

A. on foot

B. by boat

C. by taxi

D. by bus

4. Where is the passage most probably taken from?

A. A website advertisement.

B. A newspaper report.

C. A textbook on tourism.

D. A geographical book.

塔桅钢结构工程所有现场焊缝须按（）级焊缝进行操作。

A、一级

B、二级

C、三级

D、四级