Problem: A railway electrification system supplies electric power to railway trains and trams without an on-board prime mover or local fuel supply. Electrification has many advantages but requires significant capital expenditure. Selection of an electrification system is based on economics of energy supply, maintenance, and capital cost compared to the revenue obtained for freight and passenger traffic. Different systems are used for urban and intercity areas; some electric locomotives can switch to different supply voltages to allow flexibility in operation.

Electric railways use electric locomotives to haul passengers or freight in separate cars or electric multiple units, passenger cars with their own motors. Electricity is typically generated in large and relatively efficient generating stations, transmitted to the railway network and distributed to the trains. Some electric railways have their own dedicated generating stations and transmission lines but most purchase power from an electric utility. The railway usually provides its own distribution lines, switches and transformers.
1. What supplies electric power to railway trains and trams?
2. What does it not have?
3. What carries passengers?
4. Do they share motors?
5. Where is the power generated from?
6. Do some stations have their own?
7. What do most do though?
8. What is capital amount compared to?
9. Do urban and intercity use the same systems?
10. What allows flexibility in operations?
11. What does the railway provide?
Answer: 1. A railway electrification system
2. An on-board prime mover or local fuel supply.
3. Electric locomotives
4. No
5. Generating stations
6. Yes
7. Purchase power from an electric utility.
8. The revenue obtained for freight and passenger traffic
9. No
10. The ability to switch to different supply voltage
11. Electric power to railway trains and trams

Q: (CNN) -- Egypt moved closer to a first World Cup finals appearance since 1990 after reaching the African qualification playoffs on Sunday.

The Pharaohs, coached by American Bob Bradley, notched a fifth successive victory in Group G, beating Mozambique 1-0 in Maputo thanks to a 40th-minute goal from young striker Mohamed Salah.

Salah, who turned 21 on Saturday and plays for Swiss club Basel, scored a hat-trick last weekend against Zimbabwe -- and also netted last year against Guinea.

It marks a big turnaround in fortunes for the continent's seven-time champion, which failed to qualify for the last two Africa Cup of Nations and suspended its domestic league for a year after more than 70 fans died in the Port Said tragedy in February 2012.

Guinea's hopes of a World Cup debut were ended despite winning 2-0 against Zimbabwe, with striker Mohamed Yattara scoring both goals.

The Ivory Coast also went through to the playoffs, winning 4-2 away to Tanzania to be sure of topping Group C.

Two-time African player of the year Yaya Toure scored two first-half goals to help his team come from behind, and substitute Wilfried Bony sealed victory in time added on.

It meant Morocco missed out, despite winning 2-0 against Gambia on Saturday.

South Africa, the 2010 World Cup host, also failed to make the playoffs after losing 2-1 to Group A winner Ethiopia thanks to a 70th-minute headed own-goal by Bernard Parker.

Parker had put his side ahead in the first half but Getaneh Kebede equalized before the break to join Salah and Algeria's Islam Slimani on a leading five goals in the qualifiers.

Answer the following questions:
1. Who is this article about?
2. Who is their coach?
3. How many victories did he have?
4. Who did he beat?
5. Who do they have to thank for the victory?
6. How old is he?
7. Why did they suspend their domestic league for the last two years?
8. Who did Guinea win against?
9. Who did Ivory Coast win against?
10. Who did South Africa lose to?
A: 1. the Pharaohs
2. Bob Bradley
3. Five
4. Mozambique
5. Mohamed Salah
6. 21
7. 70 fans died in the Port Said tragedy in February 2012
8. Zimbabwe
9. Tanzania
10. Ethiopia

Problem: Omoa, Honduras (CNN)Alexis Gonzalez walks slowly and with some hesitation, using the outside wall of his house for balance.

"I'm getting used to the prosthesis," the 16-year-old says. He tries to smile, but an expression of sadness quickly returns to his face.

When he was 15, Gonzalez made a decision that would forever change his life -- to leave Omoa, an impoverished village in Honduras -- with dreams of getting to the United States.

At the end of the trek -- about 2,500 kilometers (1,500 miles) across Mexico and Guatemala -- he saw hope, school, a job and the chance to send money home.

"Sometimes we don't even have food to eat and I also wanted to get a higher education," Gonzalez says.

His mother was singlehandedly raising nine children, working odd jobs in restaurants and the nearby fields. They lived in a single room, an adobe house with dirt floors built on a steep and muddy hill. Chickens being raised for food roamed around the structure. Gonzalez says his father left the family when he was little boy.

When Gonzalez left in January 2014, he didn't ask his mother for permission. He only left a letter telling her about his plans. "I wouldn't have let him go," his mother Mercedes Melendez says. "When he left I went looking for him everywhere." She even went to Corinto on the Honduras-Guatemala border to ask authorities if they had seen him, she says.

Gonzalez says he traveled by land through Honduras and Guatemala with a teenage cousin. They took the bus and also walked and hitch-hiked in some places.
1. Who is the article about?
2. How old is he?
3. Where's he from?
4. Where did he want to go?
5. Why?
6. What was his home like?
7. When did he leave?
8. What was the date?
9. Did he go alone?
10. Who went with him?
11. Did his family approve?
12. Who did he live with?
13. Who else?
14. What happened to his dad?
15. Where was he?
16. Did the trip go well?
17. How do we know?
18. What does he have to use?
19. How far was the journey?
20. What transportation did they use?
Answer:
1. Alexis Gonzalez
2. 16
3. Omoa
4. United States
5. hope, school, a job and the chance to send money home
6. impoverished
7. When he was 15
8. January 2014
9. no
10. teenage cousin
11. no
12. nine children
13. His mother
14. his father
15. his father left
16. no
17. expression of sadness
18. the prosthesis
19. 2,500 kilometers
20. the bus