第一肝门的解剖结构不包括（）。 A.门静脉 B.肝固有动脉 C.胆总管 D.神经及淋

目前生产中应用最广泛的传热设备是( )。

A．沉浸式蛇管换热器
B．喷淋式蛇管换热器
C．套管式换热器
D．列管式换热器

钛（Ti）和钛合金被认为是21世纪的重要材料，钛可以通过如下反应制得：TiCl₄+2Mg==Ti+2MgCl₂，此反应中Mg元素的化合价变化为：0→+2。则钛元素的化合价变化为[ ]

A.0→+2

B.+2→0

C.+4→0

D.+4→+2

城市道路一般由车行道、人行道（）组成。

A．侧石

B．平石

C．侧平石

D．分隔带

Sicily, an island of Italy, is home to beautiful beaches, outstanding food, and a bit of Italian history on every corner. It’s located just southwest of the Italian mainland and it’s the largest Mediterranean island.

Invaded(侵略)by many armies over the centuries, it became the site of Roman and Greek colonies. Those cultures remain to this day.

Although they have a rich culture and history, Sicilian people lead a simple life. Living on land with fertile(肥沃的) soil, most of them work in agriculture, fishing and mining, and of course tourism.

In Sicily, most stores and businesses are closed from one to four in the afternoon. Street become crowded around five as people start to go out and engage in a variety of activities. They may take a walk to the shops, enjoy a pastry(糕点)or just meet up with friends.

Food is one of the great pleasures of Sicilian people. There is an old Sicilian saying：“With a contented stomach, your heart is forgiving. With an empty stomach you forgive nothing.” People will go miles out their way to eat fresh seafood. Pasta(意大利面)is the main food Each region has its seasonal pasta dishes, and every family cook their own specialty. Bread is common too. As another Sicilian saying goes, “A table without bread is like a day without sunshine.” In Sicily, bread is always freshly baked or bought, and usually twice a day.

小题1: Invaders from Rome and Greece came to Sicily______.

A．by bike

B．by ship

C．on foot

D．by train小题2:The underlined sentences mean Sicilian people______.

A．can always forgive other’s mistakes

B．can’t stand going hungry

C．like eating

D．may make mistakes when they are hungry小题3:According the author, Pasta changes with______.

A．weather

B．age

C．social position

D．season小题4:The best title of this passage might be______.

A．Sicily—an Island of Italy

B．Sicily—the Site of Roman and Greek Colonies

C．Italy’s most Beautiful Island

D．SiTALY’S Tasty Island Culture

回归分析的步骤。